ATI TEAS 6 SCIENCE ACTUAL TEST SCRIPT
2026 COMPLETE QUESTIONS AND ANSWERS
GRADED A+
◉ respiratory system function Answer: Bring oxygen to and
eliminates carbon dioxide from the blood.
◉ Upper respiratory system Answer: nose, nasal cavity, paranasal
sinuses, pharynx, larynx
◉ Lower respiratory system Answer: trachea, bronchi, lungs
◉ the airway is lined with Answer: cilia that trap debris and send
them back toward the mouth
◉ Alveoli Answer: tiny sacs of lung tissue specialized for the
movement of gases between air and blood
◉ Lung lobes Answer: 3 right, 2 left
◉ Membrane surrounding lungs Answer: pleura membrane
,◉ respiratory system muscles Answer: diaphragm and intercostal
muscles which contract to expand lungs
◉ Chemoreceptors respond to Answer: Chemical interaction (smell
and taste)
◉ Hyperventilation increases blood pH during Answer: acidosis
(low pH)
◉ Medulla Oblongata Answer: Area in brain where breathing
process is controlled
-monitors levels of carbon dioxide
◉ Slow breathing decreases blood pH during Answer: alkalosis (high
pH)
◉ Circulatory system Answer: -Heart
-Blood
-Blood vessels
◉ Blood is slowest in Answer: Capillary beds
◉ Blood consists of Answer: RBCs, WBCs, platelets, plasma
,◉ Plasma properties Answer: -contributes to more than half the
volume of blood
-consists of proteins, glucose, amino acids, ions, hormones, and
dissolved gasses
◉ circulatory system function Answer: (aka cardiovascular system)
This system works as the transportation highway for the body. It
transports substances such as oxygen, carbon dioxide, and nutrients
in the body.
◉ RBC are made in Answer: red bone marrow
◉ Platelets Answer: fragments of stem cells serve in blood clotting
◉ Cardiac Cycle: Diastole Answer: relaxation phase (blood passively
flows through atrium, tricuspid valve and into ventricle)
◉ Cardiac Cycle: Systole Answer: Ventricles contract
-Blood pushes against AV valves and they shut
-Blood pushes through semilunar valves into aorta and pulmonary
trunk
, ◉ The heart is self exciting meaning... Answer: needing no external
stimuli
◉ right side of heart Answer: pumps blood to the lungs
◉ left side of heart Answer: oxygenated blood pumps to the body
◉ Pulmonary arteries Answer: carry deoxygenated blood out of the
right ventricle and into the lungs
◉ pulmonary veins Answer: carry the oxygenated blood from the
lungs into the left atrium of the heart
◉ Blood is spread from ascending aorta branches to the Answer: -
Carotid arteries (Face)
-Subclavian arteries (arms)
-Renal Arteries (kidney)
-Common Iliac Arteries (legs)
◉ Blood is dumped into the superior and inferior vena cavae from
Answer: -Jugular veins (face)
-Subclavian Veins (arms)
-Renal Veins (kidneys)
2026 COMPLETE QUESTIONS AND ANSWERS
GRADED A+
◉ respiratory system function Answer: Bring oxygen to and
eliminates carbon dioxide from the blood.
◉ Upper respiratory system Answer: nose, nasal cavity, paranasal
sinuses, pharynx, larynx
◉ Lower respiratory system Answer: trachea, bronchi, lungs
◉ the airway is lined with Answer: cilia that trap debris and send
them back toward the mouth
◉ Alveoli Answer: tiny sacs of lung tissue specialized for the
movement of gases between air and blood
◉ Lung lobes Answer: 3 right, 2 left
◉ Membrane surrounding lungs Answer: pleura membrane
,◉ respiratory system muscles Answer: diaphragm and intercostal
muscles which contract to expand lungs
◉ Chemoreceptors respond to Answer: Chemical interaction (smell
and taste)
◉ Hyperventilation increases blood pH during Answer: acidosis
(low pH)
◉ Medulla Oblongata Answer: Area in brain where breathing
process is controlled
-monitors levels of carbon dioxide
◉ Slow breathing decreases blood pH during Answer: alkalosis (high
pH)
◉ Circulatory system Answer: -Heart
-Blood
-Blood vessels
◉ Blood is slowest in Answer: Capillary beds
◉ Blood consists of Answer: RBCs, WBCs, platelets, plasma
,◉ Plasma properties Answer: -contributes to more than half the
volume of blood
-consists of proteins, glucose, amino acids, ions, hormones, and
dissolved gasses
◉ circulatory system function Answer: (aka cardiovascular system)
This system works as the transportation highway for the body. It
transports substances such as oxygen, carbon dioxide, and nutrients
in the body.
◉ RBC are made in Answer: red bone marrow
◉ Platelets Answer: fragments of stem cells serve in blood clotting
◉ Cardiac Cycle: Diastole Answer: relaxation phase (blood passively
flows through atrium, tricuspid valve and into ventricle)
◉ Cardiac Cycle: Systole Answer: Ventricles contract
-Blood pushes against AV valves and they shut
-Blood pushes through semilunar valves into aorta and pulmonary
trunk
, ◉ The heart is self exciting meaning... Answer: needing no external
stimuli
◉ right side of heart Answer: pumps blood to the lungs
◉ left side of heart Answer: oxygenated blood pumps to the body
◉ Pulmonary arteries Answer: carry deoxygenated blood out of the
right ventricle and into the lungs
◉ pulmonary veins Answer: carry the oxygenated blood from the
lungs into the left atrium of the heart
◉ Blood is spread from ascending aorta branches to the Answer: -
Carotid arteries (Face)
-Subclavian arteries (arms)
-Renal Arteries (kidney)
-Common Iliac Arteries (legs)
◉ Blood is dumped into the superior and inferior vena cavae from
Answer: -Jugular veins (face)
-Subclavian Veins (arms)
-Renal Veins (kidneys)
