TEAS Anatomy and Physiology Practice
Updated October 27, 2026
Human anatomy and physiology is the largest part of the ATI TEAS 7 Science section. Questions ask what each body system does, how its parts work, and how systems work together. Here’s a quick system-by-system review, followed by free practice questions.
Body systems at a glance
| System | Main organs | Main job |
|---|---|---|
| Cardiovascular | Heart, blood vessels | Moves blood, oxygen and nutrients around the body |
| Respiratory | Lungs, trachea, alveoli | Brings in oxygen and removes carbon dioxide |
| Nervous | Brain, spinal cord, nerves | Controls and coordinates the body |
| Digestive | Stomach, intestines, liver, pancreas | Breaks down food and absorbs nutrients |
| Urinary | Kidneys, ureters, bladder | Filters blood and removes waste |
| Endocrine | Glands such as the pituitary, thyroid, adrenals, pancreas | Makes hormones that regulate the body |
| Immune / lymphatic | White blood cells, lymph nodes, spleen | Defends against infection |
| Musculoskeletal | Bones, muscles, joints | Support, movement, protection |
The path of blood through the heart
Body → superior and inferior vena cava → right atrium → tricuspid valve → right ventricle → pulmonary valve → pulmonary artery → lungs → pulmonary veins → left atrium → mitral valve → left ventricle → aortic valve → aorta → body.
Free TEAS anatomy and physiology questions
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Which vessel carries oxygen-poor blood from the heart to the lungs?Answer: AThe pulmonary artery carries oxygen-poor blood from the right ventricle to the lungs. The pulmonary veins bring oxygen-rich blood back to the left atrium.
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Which part of the nervous system includes the brain and spinal cord?Answer: BThe central nervous system is made up of the brain and spinal cord. The peripheral nervous system includes the nerves outside them.
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Which gland produces hormones that regulate metabolism?Answer: CThe thyroid gland makes hormones that control the body's metabolic rate.
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Where is bile produced?Answer: DThe liver produces bile, which helps digest fats. The gallbladder stores and concentrates it.
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Which blood cells help the body fight infection?Answer: AWhite blood cells (leukocytes) defend the body against infection. Red blood cells carry oxygen, and platelets help blood clot.
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What is the functional unit of the kidney?Answer: BThe nephron is the kidney's functional unit, where blood is filtered and urine begins to form.
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Which muscle is the main muscle of breathing?Answer: CThe diaphragm contracts and moves down to draw air into the lungs during inhalation.
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Which valve sits between the left atrium and the left ventricle?Answer: CThe mitral, or bicuspid, valve separates the left atrium from the left ventricle. The tricuspid valve is on the right side.
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Which structure prevents food from entering the trachea during swallowing?Answer: AThe epiglottis folds over the opening of the larynx when you swallow, directing food into the esophagus.
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Which hormone, released by the posterior pituitary, helps the kidneys conserve water?Answer: BADH, also called vasopressin, tells the kidneys to reabsorb more water, concentrating the urine.
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Where does most chemical digestion and nutrient absorption take place?Answer: DThe small intestine, with help from pancreatic enzymes and bile, completes most chemical digestion and absorbs most nutrients through its villi.
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Which type of muscle is found in the walls of the stomach and blood vessels?Answer: BSmooth muscle lines hollow organs and blood vessels and works involuntarily. Cardiac muscle is only in the heart; skeletal muscle is voluntary.
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Which part of the neuron carries impulses away from the cell body?Answer: DThe axon carries impulses away from the cell body toward other cells. Dendrites carry impulses toward the cell body.
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The largest organ of the human body is the:Answer: AThe skin (integumentary system) is the body's largest organ. The liver is the largest internal organ.
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Which blood cells are mainly responsible for clotting?Answer: CPlatelets (thrombocytes) gather at injury sites and help form clots. Erythrocytes carry oxygen, and neutrophils and lymphocytes fight infection.
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