NLN NEX Anatomy Practice Test

These questions are part of the practice quiz. Start practicing

• Which actions are commonly defensive and do not necessarily involve the brain?
• The largest part of the brain responsible for higher brain functions.
• One of the two lower chambers of the heart that pumps blood to the body is called what?
• Which group of organs assists digestion but is not the main digestive tract?
• Which is the primary site of gas exchange in the lungs?
• Which gland regulates metabolism through the secretion of thyroxin?
• Bundles of axons of sensory and/or motor neurons.
• Which gland secretes thymosin to support the immune system in young children?
• Which term describes the organ responsible for nutrient and gas exchange between mother and fetus?
• Which hormone produced by the ovaries regulates the menstrual cycle?
• Which condition involves low bone density and increased fracture risk, common after menopause?
• Which structure stores mature sperm after development but before ejaculation?
• Which muscular valve controls the passage of chyme from the stomach to the small intestine?
• Which equation expresses the formula for aerobic respiration?
• Which ion is also involved in generating electrical impulses in neurons besides sodium?
• The male gonads that secrete testosterone, responsible for male secondary sex characteristics.
• Which term describes the circulation that delivers blood to all body tissues?
• What is the chemical formula for glucose as shown in the aerobic respiration equation?
• The stomach secretes gastric juice; this digestive juice is produced by which organ?
• Which structure connects muscles to bones?
• Which type of muscle is involuntary and found in the walls of the digestive tract and blood vessels?
• The tympanic membrane is commonly referred to as the
• Which hormone is primarily responsible for male secondary sexual characteristics and is produced by the interstitial cells of the testes?
• Which component includes the shoulders, arms, pelvis, and legs?
• What are the thinner tubes that branch from the bronchi and lead to the alveoli?
• What is the term for the ability to distinguish different touch stimuli such as texture and shape?
• Which process involves splitting molecules by adding water?
• Which term describes the circulation that delivers blood to all body tissues?
• The division of the skeleton that includes the limbs and girdles is called the?
• The cell produced when two gametes fuse is called?
• A protein in red blood cells that carries oxygen.
• Which organ is the site where the fertilized egg implants and develops?
• Which term describes the circulation between the heart and lungs for gas exchange?
• The flow of blood from the heart to the rest of the body and back is?
• Which sensory modality provides information about the force of a touch?
• Which structure contains the glomerulus?
• Which circulation supplies blood to the heart?
• Which neuron conveys impulses from the central nervous system to muscles or glands?
• During inhalation, which muscle contracts to enlarge the thoracic cavity?
• The part of the ear that contains the ossicles and transmits sound vibrations is the
• Which muscle bends or moves a limb away from the anatomical position?
• Which regulatory mechanism maintains hormone balance by limiting secretion once the target level is reached?
• The membrane that separates the outer ear from the middle ear is the
• Which structure extends from the brain downward, enclosed by the vertebral column, and acts as the center for reflex actions?
• What connects bones to other bones?
• The elimination of waste from the body is called what?
• Which middle ear bone is commonly known as the anvil?
• Which circulation moves blood through the lungs?
• Which blood vessel transports blood toward the heart and contains valves to prevent backflow?
• What is the process by which energy is obtained from food?
• The site within the testes where sperm are produced is the?
• Which term describes a cell containing half the normal chromosome number?
• Which type of touch sensation is protective?
• The organ that connects the developing embryo to the uterine wall is the?
• The branch of the peripheral nervous system concerned with the external environment.
• What does PNS stand for?
• Which structure creates a concentration gradient in the kidney?
• Composed of bones, connective tissue, and muscle, responsible for support, protection, and movement.
• Which structures are the functional units for gas exchange in the lungs?
• Which retinal cells are specialized for color detection and high-acuity vision?
• Which sensation provides information on the force of a touch?
• Which term describes the science studying the mechanisms and processes that sustain life?
• Which part of a neuron receives stimuli from the environment or other neurons?
• The inner lining of the uterus that thickens in preparation for implantation is which structure?
• Which condition results from peristalsis causing very loose stools?
• What are the two main branches that lead from the trachea to the lungs?
• What fluid returns to the circulatory system from the lymphatic system?
• Which ovarian hormone is primarily responsible for regulating female reproductive functions and secondary sexual characteristics?
• What is the cup-shaped structure that contains the glomerulus?
• In human reproduction, which term describes a reproductive cell that fuses during fertilization?
• The small projections in the small intestine that increase surface area for absorption are known as what?
• Which circulation delivers blood to the rest of the body?
• In the testes, which cells are responsible for testosterone production?
• Which condition is a degenerative bone and joint disease?
• Which statement best describes the peripheral nervous system?
• Which eye structure changes shape to focus light on the retina?
• The system that includes the brain and spinal cord.
• Which condition results from too little peristalsis and excessive reabsorption of water?
• The medulla oblongata is a region of the brainstem primarily involved in controlling which function?
• Which term refers to the science focused on the structure of the human body?
• What is the concentrated mixture of wastes left behind in the tubules?
• Which phase of the heartbeat is when the heart muscle contracts and pumps blood?
• Organs such as the liver, gallbladder, and pancreas that assist in digestion are known as the?
• Which tissue connects bones to other bones?
• The total surface area of the exterior of a three-dimensional object, which increases digestion efficiency, is called the?
• What is the process of breaking food into smaller pieces called?
• The release of a mature egg from the ovarian follicle is called?
• What is the process of obtaining energy from glucose without oxygen?
• What term describes the cluster of pancreatic cells that regulate blood sugar?
• What muscle forms a sheet lining the bottom of the thoracic cavity and aids in breathing?
• The duct that carries sperm from the vas deferens to the urethra is the what?
• The colored part of the eye that regulates the amount of light entering the pupil is the
• The primary female reproductive organs that produce eggs are called the?
• The cells responsible for clotting are known as what?
• Which nephron segment is primarily involved in modifying the filtrate after initial processing?
• What is the liquid component of blood that contains proteins, ions, hormones, and gases?
• Which process involves shedding of the endometrial lining if fertilization does not occur?
• Which gland regulates water balance and blood pressure through the secretion of adrenaline?
• The part of the ear that houses the auditory ossicles is the
• Which structure is transparent and focuses light onto the retina?
• What structure connects the fetus to the placenta?
• The liquid portion of blood that carries hormones?
• Which part of the neuron contains the nucleus and organelles?
• What is the functional unit of the kidney that consists of the glomerulus, Bowman's capsule, proximal convoluted tubule, loop of Henle, and distal convoluted tubule?
• What is the process of obtaining energy from glucose in the presence of oxygen?
• Which phase occurs when the heart muscle relaxes and fills with blood?
• Which process involves the release of a mature egg from the ovary?
• Which fragments of cells important in blood clotting?
• Which part controls basic homeostatic functions such as body temperature, blood pressure, and breathing?
• Which term refers to the body's maintenance of stable internal conditions through hormonal signaling?
• Which heart chamber pumps blood to the body?
• The first of the three ossicles in the middle ear is the
• Which term describes circulation through the body excluding the lungs?
• What is the first segment of the renal tubule where reabsorption occurs?
• The external pouch that contains the testes is called?
• Which term refers to the semiliquid mass formed in digestion consisting of partly digested food and gastric juices?
• Which muscle returns the limb to the anatomical position?
• Which ovarian hormone regulates female reproductive functions?
• Gastric juice is produced by the lining of which organ?
• Which condition is autoimmune inflammatory arthritis?
• What is the part of the throat that leads to the larynx?
• Cells in the testes that produce male sex hormones are called what?
• Peripheral Nervous System, further divided into somatic and autonomic branches.
• Which molecule serves as the primary energy currency produced during respiration?
• The external pouch containing the testes?
• An immature egg found within ovarian follicles is called what?
• What is the largest organ of the integumentary system?
• What connects bones and allows movement?
• Which enzyme breaks down starches into smaller carbohydrate molecules?
• The functional unit of the nervous system is the
• Which division of the nervous system is primarily responsible for involuntary functions like digestion and heartbeat?
• A neural pathway that carries out simple, quick, automatic responses to stimuli.
• Which duct carries sperm from the epididymis toward the urethra and merges with secretions from seminal vesicles?
• Which organ serves as the principal excretory organ of the body?
• The developing embryo after the eighth week of pregnancy is called the?
• Chemicals that act as messengers and help control important processes such as growth and metabolism are called what?
• The part of the brain stem that controls autonomic functions.
• Concerned with the internal environment, such as the digestive system.
• Which neurons make up the brain and spinal cord?
• The innermost layer of skin that consists of connective tissue and fat is the
• The outer layer of the skin that serves as a barrier is the
• What describes the moving electrical charge generated in a neuron?
• What is the second layer of skin that contains connective tissue, hair follicles, and blood vessels?
• The smallest bone in the body located in the middle ear is the
• Which condition results from peristalsis moving feces through the colon too quickly?
• What is the part of a neuron that transmits impulses away from the cell body?
• Which nerve transmits visual information from the eye to the brain?
• A male sex hormone produced by interstitial cells is known as?
• The transparent front part of the eye that allows light to enter is the
• The end of an axon where neurotransmitters are released.
• Special pockets in the lymphatic system where lymph is filtered?
• The tube extending between the mouth and the anus, organized into specialized regions for digestion, is called the?
• Which cells transport oxygen and lack nuclei and mitochondria?
• Which term best describes the branch of the nervous system that handles voluntary control and information from the external environment?
• Which part of the eye primarily refracts light to begin focusing?
• Which energy-producing pathway requires oxygen?
• One of the two upper chambers of the heart that receive blood is called what?
• The coiled tube where sperm mature and are stored is called what?
• Which system provides support, protection, and movement and is composed of bones, connective tissue, and muscle?
• The female gonads that secrete estrogen and progesterone, responsible for female secondary sex characteristics and the menstrual cycle.
• Which retinal cells are primarily responsible for color vision?
• What is the principal excretory organ of the body?
• Which structure serves as the voice box and air travels through after the pharynx?
• Which part makes up the largest portion of the brain and is the site of complex and high-level thinking?
• Which ion is involved in generating electrical impulses in neurons besides sodium?
• Which ion is involved in generating electrical impulses in neurons?
• A cell containing the full complement of chromosomes is called what?
• What connects muscles to bones?
• What cushions bones at the joints?
• Which term describes the mature female gamete released during ovulation?
• Which photoreceptor cells in the retina are responsible for color vision?
• Which muscle bends or moves a limb away from the anatomical position?
• Which tubes conduct urine from the kidneys to the urinary bladder?
• Glands that release saliva containing enzymes like amylase are called what?
• A reproductive cell that fuses with another during fertilization is called a?
• Master gland that controls other endocrine glands?
• Which layer lies directly below the dermis and is primarily composed of fat?
• Which is the fluid that travels through the lymphatic system and returns to circulation?
• What byproduct is produced during anaerobic respiration in muscles and can cause sore muscles after exercise?
• The islets of Langerhans are responsible for storage of sugar in liver and blood sugar regulation through insulin and glucagon.
• Which term describes the circulation that supplies oxygen and nutrients to the body's tissues?
• Which component includes the skull, vertebrae, ribs, and sternum?
• Which structure is a network of capillaries located inside Bowman's capsule?
• Which photoreceptor cells are most sensitive to low-light conditions?
• Small, finger-like projections in the small intestine that increase surface area for absorption are called?
• Which branch of the Peripheral Nervous System is concerned with the internal environment?
• According to the aerobic respiration equation, which products are listed?
• The autonomic branch is involved in regulating which of the following?
• The shedding of the endometrial lining when fertilization does not occur is called what?
• Found only in the heart and is involuntary?
• Blood vessels that transport blood away from the heart?
• The duct that transports sperm from the epididymis to the ejaculatory duct is the?
• Which structure stores and matures sperm after production?
• What is the second ossicle of the middle ear?
• The duct through which urine is excreted from the body is called the?
• The opening in the center of the iris that allows light to enter the eye is the
• Which structure is the functional unit of the kidney?
• Which term describes the process of breaking nutrients into small molecules via chemical processes?
• What is a mature egg called?
• In anatomy, the major division of the skeleton that includes the limbs and girdles is called the
• A cell containing half the normal chromosome number is called?
• Which structure located below and behind the cerebrum is responsible for muscular coordination and balance?
• A spiral-shaped structure in the inner ear that converts sound vibrations into signals is the
• What term describes the process of breaking nutrients into small molecules?
• Which brain region is the largest part and handles higher-order thinking such as reasoning and planning?
• Which muscle returns the limb to the anatomical position?
• What are chemicals that transmit signals across synapses called?
• Small vessels that collect lymph fluid from tissues.
• Concerned with the external environment.
• Which of the following carries oxygen within the blood?
• Which structure is the functional unit of the kidney?
• Blood that has low oxygen content and is returned to the heart from the body?
• Which neuron relays information within the central nervous system?
• Which gland regulates calcium metabolism through the secretion of parathormone?
• Which term describes the simple, quick, automatic responses to certain stimuli?
• The thyroid gland primarily secretes which hormone to regulate metabolism?
• Which tiny vessels connect arteries and veins and allow nutrient and gas exchange?
• Which part of the ear collects sound waves?
• Which component primarily carries oxygen in the bloodstream?
• The liquid result of partially digested food mixed with gastric juices is called the?
• Cell fragments that play a key role in blood clotting.
• Which structure conducts air between the larynx and the bronchi?
• Which middle-ear bone is the smallest in the human body?
• What is the term for bundles of axons in the peripheral nervous system?
• Which neurons carry impulses from interneurons to muscles and glands?
• Which tactile sensation is primarily protective and detects gentle contact?
• Photoreceptor cells in the retina that are sensitive to light are
• The brain is part of which nervous system?
• Small structures that filter lymph fluid and contain immune cells.
• The tiny bone in the middle ear that acts as the first transmitter of sound is the
• The sense used to detect odors is called
• The system that includes the nerves and sense receptors.
• Which tube equalizes pressure between the middle ear and the atmosphere?
• At the synapse, what is released to propagate the signal?
• Which process prevents over-secretion of hormones by signaling to reduce release?
• Which term describes the role of hemoglobin?
• Blood that has high oxygen content after gas exchange in the lungs?
• The thymus gland secretes which hormone that plays a role in immune development?
• Which term denotes the male gamete?
• The tubes through which eggs travel from the ovaries to the uterus are called the?
• Which tissue cushions joints and reduces friction between articulating surfaces?
• What term describes the body's way of keeping its internal environment stable by means of secretions from the endocrine glands?
• Which term denotes the structure that extends from the mouth to the anus?
• The part of the CNS that transmits signals between brain and body.
• Which eye structure primarily focuses light onto the retina by changing shape?
• Which blood cells are less abundant and involved in host defense?
• Which organ processes information in the central nervous system?
• The part of the ear that contains fluid and is responsible for hearing and balance is the
• Location in long bones where blood cells are made.
• Which term describes the cell produced by the fusion of two gametes?
• The female gamete is called which of the following?
• Bone cells that produce a hard, calcium-rich extracellular matrix.
• Which retinal cells are primarily responsible for vision in low light?
• The sense of smell is
• Proteins that speed up chemical reactions in the body are called?
• The nerve that transmits visual information from the retina to the brain is the
• Which brain region is primarily responsible for balance and coordination of movement?
• Which field studies the structure of the human body?
• The junction between two neurons where neurotransmitters are released is called the
• Which neuron type transmits impulses from sense organs and receptors to the central nervous system?
• Which enzyme breaks down starches into smaller carbohydrate molecules?
• Which organ forms the interface for nutrient and gas exchange between mother and developing fetus?
• The primary male reproductive organs that produce sperm are the?
• The male gamete is called?
• The female gonads secret estrogen and progesterone; which organ is this?