ATI TEAS 7 Science Latest Exam Prep 2026: 150
Practice Questions with Four Multiple-Choice
Options, Correct Answers Italicized, and Full
Rationales
Human Anatomy and Physiology
1. Which of the following structures in the male reproductive system secretes a fluid
that nourishes and protects sperm?
A) Urethra
B) Prostate gland
C) Vas deferens
D) Epididymis
Rationale: The prostate gland secretes a milky, alkaline fluid that nourishes and protects
sperm, neutralizing the acidity of the vaginal tract.
2. Which of the following parts of the central nervous system releases chemicals that
regulate the pituitary gland?
A) Cerebellum
B) Hypothalamus
,C) Spinal cord
D) Thalamus
Rationale: The hypothalamus produces releasing and inhibiting hormones that control the
secretion of hormones from the anterior pituitary gland.
3. Which of the following body systems is the primary system involved in preventing
an infection when a cut in the skin allows bacteria to enter the body?
A) The immune system
B) The endocrine system
C) The excretory system
D) The circulatory system
Rationale: The immune system is the body's primary defense against pathogens, activating
a response when the skin barrier is breached.
4. Which of the following skin layers contains dead cells?
A) Papillary layer
B) Stratum basale
C) Stratum corneum
D) Reticular layer
Rationale: The stratum corneum is the outermost layer of the epidermis and consists of
dead, keratinized cells that form a waterproof barrier.
5. Which of the following statements describes how bile salts aid during digestion?
A) Decrease the size of starches to aid in digestion
B) Increase the size of fat droplets to aid in digestion
C) Increase the size of starches to aid in digestion
D) Decrease the size of fat droplets to aid in digestion
,Rationale: Bile salts emulsify fats, breaking large fat droplets into smaller ones to increase
the surface area for digestive enzymes like lipase.
6. Which of the following stem cells can differentiate into the largest number of
different cell types?
A) Somatic
B) Unipotent
C) Oligopotent
D) Pluripotent
Rationale: Pluripotent stem cells, such as embryonic stem cells, can differentiate into all cell
types of the three germ layers, giving them the broadest potential.
7. Which blood group is the universal donor?
A) Type A
B) Type B
C) Type O
D) Type AB
Rationale: Type O blood has no A or B antigens on its red blood cells, making it safe to
transfuse into individuals with any ABO blood type.
8. Blood oxygen levels are most likely low when blood _________.
A) fills the right atrium
B) leaves the left ventricle
C) is in the pulmonary veins
D) is in the aorta
Rationale: The right atrium receives deoxygenated blood returning from the body's tissues,
so oxygen levels are lowest there.
, 9. After food has been masticated in the oral cavity, where does it go next?
A) Esophagus
B) Pharynx
C) Larynx
D) Stomach
Rationale: After chewing, the bolus is swallowed and passes into the pharynx, which then
directs it into the esophagus.
10. The diffusion of nutrients through the walls of the digestive system is critical to
homeostasis. Where does the majority of this diffusion take place?
A) Stomach
B) Small intestine
C) Large intestine
D) Esophagus
Rationale: The small intestine is the primary site of nutrient absorption, with its villi and
microvilli providing a large surface area.
11. Where is skeletal muscle found?
A) attached to bones
B) in the walls of blood vessels
C) in the heart
D) in the digestive tract
Rationale: Skeletal muscle is voluntary, striated muscle that is attached to bones and
enables movement.
12. Which part of the brain is primarily responsible for coordinating voluntary
movements and maintaining balance?
A) Cerebrum
Practice Questions with Four Multiple-Choice
Options, Correct Answers Italicized, and Full
Rationales
Human Anatomy and Physiology
1. Which of the following structures in the male reproductive system secretes a fluid
that nourishes and protects sperm?
A) Urethra
B) Prostate gland
C) Vas deferens
D) Epididymis
Rationale: The prostate gland secretes a milky, alkaline fluid that nourishes and protects
sperm, neutralizing the acidity of the vaginal tract.
2. Which of the following parts of the central nervous system releases chemicals that
regulate the pituitary gland?
A) Cerebellum
B) Hypothalamus
,C) Spinal cord
D) Thalamus
Rationale: The hypothalamus produces releasing and inhibiting hormones that control the
secretion of hormones from the anterior pituitary gland.
3. Which of the following body systems is the primary system involved in preventing
an infection when a cut in the skin allows bacteria to enter the body?
A) The immune system
B) The endocrine system
C) The excretory system
D) The circulatory system
Rationale: The immune system is the body's primary defense against pathogens, activating
a response when the skin barrier is breached.
4. Which of the following skin layers contains dead cells?
A) Papillary layer
B) Stratum basale
C) Stratum corneum
D) Reticular layer
Rationale: The stratum corneum is the outermost layer of the epidermis and consists of
dead, keratinized cells that form a waterproof barrier.
5. Which of the following statements describes how bile salts aid during digestion?
A) Decrease the size of starches to aid in digestion
B) Increase the size of fat droplets to aid in digestion
C) Increase the size of starches to aid in digestion
D) Decrease the size of fat droplets to aid in digestion
,Rationale: Bile salts emulsify fats, breaking large fat droplets into smaller ones to increase
the surface area for digestive enzymes like lipase.
6. Which of the following stem cells can differentiate into the largest number of
different cell types?
A) Somatic
B) Unipotent
C) Oligopotent
D) Pluripotent
Rationale: Pluripotent stem cells, such as embryonic stem cells, can differentiate into all cell
types of the three germ layers, giving them the broadest potential.
7. Which blood group is the universal donor?
A) Type A
B) Type B
C) Type O
D) Type AB
Rationale: Type O blood has no A or B antigens on its red blood cells, making it safe to
transfuse into individuals with any ABO blood type.
8. Blood oxygen levels are most likely low when blood _________.
A) fills the right atrium
B) leaves the left ventricle
C) is in the pulmonary veins
D) is in the aorta
Rationale: The right atrium receives deoxygenated blood returning from the body's tissues,
so oxygen levels are lowest there.
, 9. After food has been masticated in the oral cavity, where does it go next?
A) Esophagus
B) Pharynx
C) Larynx
D) Stomach
Rationale: After chewing, the bolus is swallowed and passes into the pharynx, which then
directs it into the esophagus.
10. The diffusion of nutrients through the walls of the digestive system is critical to
homeostasis. Where does the majority of this diffusion take place?
A) Stomach
B) Small intestine
C) Large intestine
D) Esophagus
Rationale: The small intestine is the primary site of nutrient absorption, with its villi and
microvilli providing a large surface area.
11. Where is skeletal muscle found?
A) attached to bones
B) in the walls of blood vessels
C) in the heart
D) in the digestive tract
Rationale: Skeletal muscle is voluntary, striated muscle that is attached to bones and
enables movement.
12. Which part of the brain is primarily responsible for coordinating voluntary
movements and maintaining balance?
A) Cerebrum
