ATI TEAS 7 NEWEST 2026/2027 EXAM WITH QUESTIONS AND
CORRECT ANSWERS ALREADY GRADED A+ AND 100%
GUARANTEE PASS
What is the main function of the digestive system? - ANSWER Break down food, absorb nutrients,
and remove waste.
Which organ absorbs the most nutrients? - ANSWER Small intestine (villi increase surface area).
Name the pathway of food from mouth to anus. - ANSWER Mouth → Esophagus → Stomach → Small
Intestine → Large Intestine → Rectum → Anus.
What is peristalsis? - ANSWER Wave-like muscular contractions that move food through the digestive
tract.
What is the main function of the respiratory system? - ANSWER Exchange gases (O₂ in, CO₂ out)
between lungs and blood.
Where does gas exchange occur in the lungs? - ANSWER In the alveoli.
Which muscles are involved in breathing? - ANSWER Diaphragm and intercostal muscles.
Define inspiration and expiration. - ANSWER Inspiration = inhale (diaphragm contracts), Expiration =
exhale (diaphragm relaxes).
Name the four heart chambers and their blood type. - ANSWER RA (deoxygenated), RV
(deoxygenated), LA (oxygenated), LV (oxygenated).
Trace blood flow through the heart. - ANSWER Body → RA → Tricuspid → RV → Pulmonary valve →
Pulmonary artery → Lungs → Pulmonary veins → LA → Mitral → LV → Aortic valve → Body.
What is the difference between systemic and pulmonary circulation? - ANSWER Pulmonary = heart
→ lungs → heart; Systemic = heart → body → heart.
, Name the four heart valves. - ANSWER Tricuspid (RA→RV), Pulmonary (RV→lungs), Mitral/Bicuspid
(LA→LV), Aortic (LV→body).
What is systole and diastole? - ANSWER Systole = contraction (blood ejected), Diastole = relaxation
(chambers fill).
Which ventricle has the thickest wall and why? - ANSWER Left ventricle; pumps blood to entire body.
What are the three types of muscles? - ANSWER Skeletal (voluntary), Smooth (involuntary), Cardiac
(heart).
Name key endocrine glands and one hormone each. - ANSWER Pituitary → GH; Thyroid → Thyroxine;
Pancreas → Insulin; Adrenal → Cortisol; Ovaries/Testes → Estrogen/Testosterone.
Difference between endocrine and exocrine glands? - ANSWER Endocrine = hormones to blood,
Exocrine = substances through ducts.
What hormone lowers blood glucose? - ANSWER Insulin (pancreas).
What hormone raises blood glucose? - ANSWER Glucagon (pancreas).
Functional unit of the kidney? - ANSWER Nephron.
Steps of urine formation? - ANSWER Filtration → Reabsorption → Secretion → Excretion.
Difference between innate and adaptive immunity? - ANSWER Innate = first line, nonspecific (skin,
phagocytes); Adaptive = specific (B cells, T cells).
What are memory cells? - ANSWER Cells that remember pathogens for faster response upon re-
exposure.
What is a vaccine? - ANSWER Trains the immune system to recognize and fight a pathogen.
CORRECT ANSWERS ALREADY GRADED A+ AND 100%
GUARANTEE PASS
What is the main function of the digestive system? - ANSWER Break down food, absorb nutrients,
and remove waste.
Which organ absorbs the most nutrients? - ANSWER Small intestine (villi increase surface area).
Name the pathway of food from mouth to anus. - ANSWER Mouth → Esophagus → Stomach → Small
Intestine → Large Intestine → Rectum → Anus.
What is peristalsis? - ANSWER Wave-like muscular contractions that move food through the digestive
tract.
What is the main function of the respiratory system? - ANSWER Exchange gases (O₂ in, CO₂ out)
between lungs and blood.
Where does gas exchange occur in the lungs? - ANSWER In the alveoli.
Which muscles are involved in breathing? - ANSWER Diaphragm and intercostal muscles.
Define inspiration and expiration. - ANSWER Inspiration = inhale (diaphragm contracts), Expiration =
exhale (diaphragm relaxes).
Name the four heart chambers and their blood type. - ANSWER RA (deoxygenated), RV
(deoxygenated), LA (oxygenated), LV (oxygenated).
Trace blood flow through the heart. - ANSWER Body → RA → Tricuspid → RV → Pulmonary valve →
Pulmonary artery → Lungs → Pulmonary veins → LA → Mitral → LV → Aortic valve → Body.
What is the difference between systemic and pulmonary circulation? - ANSWER Pulmonary = heart
→ lungs → heart; Systemic = heart → body → heart.
, Name the four heart valves. - ANSWER Tricuspid (RA→RV), Pulmonary (RV→lungs), Mitral/Bicuspid
(LA→LV), Aortic (LV→body).
What is systole and diastole? - ANSWER Systole = contraction (blood ejected), Diastole = relaxation
(chambers fill).
Which ventricle has the thickest wall and why? - ANSWER Left ventricle; pumps blood to entire body.
What are the three types of muscles? - ANSWER Skeletal (voluntary), Smooth (involuntary), Cardiac
(heart).
Name key endocrine glands and one hormone each. - ANSWER Pituitary → GH; Thyroid → Thyroxine;
Pancreas → Insulin; Adrenal → Cortisol; Ovaries/Testes → Estrogen/Testosterone.
Difference between endocrine and exocrine glands? - ANSWER Endocrine = hormones to blood,
Exocrine = substances through ducts.
What hormone lowers blood glucose? - ANSWER Insulin (pancreas).
What hormone raises blood glucose? - ANSWER Glucagon (pancreas).
Functional unit of the kidney? - ANSWER Nephron.
Steps of urine formation? - ANSWER Filtration → Reabsorption → Secretion → Excretion.
Difference between innate and adaptive immunity? - ANSWER Innate = first line, nonspecific (skin,
phagocytes); Adaptive = specific (B cells, T cells).
What are memory cells? - ANSWER Cells that remember pathogens for faster response upon re-
exposure.
What is a vaccine? - ANSWER Trains the immune system to recognize and fight a pathogen.
