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ATI TEAS Science Exam 2025/2026 – Complete Questions & Answers |
Graded A+ | Comprehensive Study Guide with Guaranteed Pass
Cardiovascular System - ANSWER=The moment of blood and lymph around the body
Permits nutrient distribution, waste removal, communication, and protection.
Closed Circulatory System - ANSWER=Transports Blood
The pulmonary loop carries deoxygenated blood from the RV to the lungs and returns
oxygenated blood to the LA.
The systematic Loop carries oxygenated blood from the LV to the body, returning deoxygenated
blood to the RA.
Open lymphatic system - ANSWER=Comprises of lymph that bathes the interstitial spaces in
between the cells
Circulated through lymph vessels
Cardiovascular System Functions - ANSWER=transporting nutrients, wastes, chemical
messengers, and immune molecules.
Two Cycles of contractions - ANSWER=Systole and diastole
Systole - ANSWER=Contraction of the heart
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Diastole - ANSWER=Relaxation of the heart
Ventricular systole - ANSWER=(Contraction of ventricles)
Atrioventricular valves (mitral and tricuspid) close
"Lub" sound
During Atrial Systole - ANSWER=The empty ventricles are getting filled with blood are now
getting pushed out
Semilunar valves in aorta and pulmonary arteries close, preventing blood to back flow blood
from coming back into the ventricles.
"Dub" sound
Sinoatrial Node - ANSWER=Pacemaker of the heart
Arteries - ANSWER=thick walls to withstand pressure of blood pumped by heart
Veins - ANSWER=Thin walls, Large lumen
Blood Plasma contains... - ANSWER=Nutrients
Hormones
antibodies
Immune proteins
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Red Blood Cells contains.... - ANSWER=Hemoglobin
Transports oxygen from the lungs to the rest of the body
Carbon dioxide - ANSWER=dissolves in plasma and is removed by the lungs
White blood cells: 2 lineages - ANSWER=1.) Leukocytes
2.) Lymphocytes
Respiratory System - ANSWER=Oxygen/carbon dioxide exchange (Lungs, trachea, larynx, nasal
cavities, and pharynx)
Breakdown of which of the following begins in the small intestine?
A. Fats
B. Fiber
C. Proteins
D. Carbohydrates - ANSWER=A. Fats
Which of the following is the tube that carries both sperm and urine for release outside the
body?
A. Ureter
B. Urethra
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C. Vans deferens
D. Epididymis - ANSWER=B. Urethra
Which of the following is the region of the kidney that contains the glomerulus of the nephron?
A. Medulla
B. Pelvis
C. Cortex
D. Adrenal - ANSWER=C. Cortex
Which of the following anti-body-secreting cells is triggered to proliferate upon vaccination?
A. Erythrocytes
B. B-lymphocytes
C. Leukocytes
D. T-lymphocytes - ANSWER=B. B-lymphocytes
Which of the following produces ammonia by deamination in the liver?
A. Proteins
B. Carbohydrates
C. Nucleic acids
D. Lipids - ANSWER=A. Proteins
ATI TEAS Science Exam 2025/2026 – Complete Questions & Answers |
Graded A+ | Comprehensive Study Guide with Guaranteed Pass
Cardiovascular System - ANSWER=The moment of blood and lymph around the body
Permits nutrient distribution, waste removal, communication, and protection.
Closed Circulatory System - ANSWER=Transports Blood
The pulmonary loop carries deoxygenated blood from the RV to the lungs and returns
oxygenated blood to the LA.
The systematic Loop carries oxygenated blood from the LV to the body, returning deoxygenated
blood to the RA.
Open lymphatic system - ANSWER=Comprises of lymph that bathes the interstitial spaces in
between the cells
Circulated through lymph vessels
Cardiovascular System Functions - ANSWER=transporting nutrients, wastes, chemical
messengers, and immune molecules.
Two Cycles of contractions - ANSWER=Systole and diastole
Systole - ANSWER=Contraction of the heart
,2|Page
Diastole - ANSWER=Relaxation of the heart
Ventricular systole - ANSWER=(Contraction of ventricles)
Atrioventricular valves (mitral and tricuspid) close
"Lub" sound
During Atrial Systole - ANSWER=The empty ventricles are getting filled with blood are now
getting pushed out
Semilunar valves in aorta and pulmonary arteries close, preventing blood to back flow blood
from coming back into the ventricles.
"Dub" sound
Sinoatrial Node - ANSWER=Pacemaker of the heart
Arteries - ANSWER=thick walls to withstand pressure of blood pumped by heart
Veins - ANSWER=Thin walls, Large lumen
Blood Plasma contains... - ANSWER=Nutrients
Hormones
antibodies
Immune proteins
,3|Page
Red Blood Cells contains.... - ANSWER=Hemoglobin
Transports oxygen from the lungs to the rest of the body
Carbon dioxide - ANSWER=dissolves in plasma and is removed by the lungs
White blood cells: 2 lineages - ANSWER=1.) Leukocytes
2.) Lymphocytes
Respiratory System - ANSWER=Oxygen/carbon dioxide exchange (Lungs, trachea, larynx, nasal
cavities, and pharynx)
Breakdown of which of the following begins in the small intestine?
A. Fats
B. Fiber
C. Proteins
D. Carbohydrates - ANSWER=A. Fats
Which of the following is the tube that carries both sperm and urine for release outside the
body?
A. Ureter
B. Urethra
, 4|Page
C. Vans deferens
D. Epididymis - ANSWER=B. Urethra
Which of the following is the region of the kidney that contains the glomerulus of the nephron?
A. Medulla
B. Pelvis
C. Cortex
D. Adrenal - ANSWER=C. Cortex
Which of the following anti-body-secreting cells is triggered to proliferate upon vaccination?
A. Erythrocytes
B. B-lymphocytes
C. Leukocytes
D. T-lymphocytes - ANSWER=B. B-lymphocytes
Which of the following produces ammonia by deamination in the liver?
A. Proteins
B. Carbohydrates
C. Nucleic acids
D. Lipids - ANSWER=A. Proteins
