BIOS 256 Midterm Exam 4 (Latest Update
) Anatomy and Physiology IV
with Lab | Questions & Answers | 100%
Correct | Grade A – Chamberlain
1. Which blood component carries oxygen to body tissues?
A. Plasma
B. Red blood cells
C. Platelets
D. White blood cells
Correct Answer: B
Rationale: Red blood cells contain hemoglobin, which binds oxygen
for transport to tissues.
2. Which hormone regulates the sleep-wake cycle?
A. Cortisol
B. Melatonin
C. Adrenaline
D. Thyroxine
Correct Answer: B
Rationale: Melatonin is secreted by the pineal gland and controls
circadian rhythms.
,3. Which part of the neuron receives signals from other neurons?
A. Axon
B. Dendrite
C. Soma
D. Axon terminal
Correct Answer: B
Rationale: Dendrites carry incoming signals to the neuron cell
body.
4. Which organ stores bile for fat digestion?
A. Liver
B. Pancreas
C. Gallbladder
D. Small intestine
Correct Answer: C
Rationale: The gallbladder stores and releases bile into the small
intestine to emulsify fats.
5. Which hormone lowers blood glucose levels?
A. Insulin
B. Glucagon
,C. Cortisol
D. Adrenaline
Correct Answer: A
Rationale: Insulin promotes glucose uptake into cells, reducing
blood sugar levels.
6. Which type of muscle is involuntary and found in organ walls?
A. Skeletal
B. Cardiac
C. Smooth
D. None of the above
Correct Answer: C
Rationale: Smooth muscle is involuntary and lines organs such as
the stomach and intestines.
7. Which part of the brain coordinates voluntary movements and
balance?
A. Cerebrum
B. Cerebellum
C. Medulla oblongata
D. Hypothalamus
, Correct Answer: B
Rationale: The cerebellum coordinates muscle movements and
maintains posture and balance.
8. Which hormone stimulates the adrenal cortex to release
cortisol?
A. TSH
B. ACTH
C. GH
D. FSH
Correct Answer: B
Rationale: ACTH triggers cortisol production by the adrenal cortex
during stress.
9. Which type of joint allows movement in multiple directions?
A. Hinge
B. Pivot
C. Ball and socket
D. Gliding
Correct Answer: C
Rationale: Ball and socket joints, such as the shoulder, allow
movement in multiple planes.
) Anatomy and Physiology IV
with Lab | Questions & Answers | 100%
Correct | Grade A – Chamberlain
1. Which blood component carries oxygen to body tissues?
A. Plasma
B. Red blood cells
C. Platelets
D. White blood cells
Correct Answer: B
Rationale: Red blood cells contain hemoglobin, which binds oxygen
for transport to tissues.
2. Which hormone regulates the sleep-wake cycle?
A. Cortisol
B. Melatonin
C. Adrenaline
D. Thyroxine
Correct Answer: B
Rationale: Melatonin is secreted by the pineal gland and controls
circadian rhythms.
,3. Which part of the neuron receives signals from other neurons?
A. Axon
B. Dendrite
C. Soma
D. Axon terminal
Correct Answer: B
Rationale: Dendrites carry incoming signals to the neuron cell
body.
4. Which organ stores bile for fat digestion?
A. Liver
B. Pancreas
C. Gallbladder
D. Small intestine
Correct Answer: C
Rationale: The gallbladder stores and releases bile into the small
intestine to emulsify fats.
5. Which hormone lowers blood glucose levels?
A. Insulin
B. Glucagon
,C. Cortisol
D. Adrenaline
Correct Answer: A
Rationale: Insulin promotes glucose uptake into cells, reducing
blood sugar levels.
6. Which type of muscle is involuntary and found in organ walls?
A. Skeletal
B. Cardiac
C. Smooth
D. None of the above
Correct Answer: C
Rationale: Smooth muscle is involuntary and lines organs such as
the stomach and intestines.
7. Which part of the brain coordinates voluntary movements and
balance?
A. Cerebrum
B. Cerebellum
C. Medulla oblongata
D. Hypothalamus
, Correct Answer: B
Rationale: The cerebellum coordinates muscle movements and
maintains posture and balance.
8. Which hormone stimulates the adrenal cortex to release
cortisol?
A. TSH
B. ACTH
C. GH
D. FSH
Correct Answer: B
Rationale: ACTH triggers cortisol production by the adrenal cortex
during stress.
9. Which type of joint allows movement in multiple directions?
A. Hinge
B. Pivot
C. Ball and socket
D. Gliding
Correct Answer: C
Rationale: Ball and socket joints, such as the shoulder, allow
movement in multiple planes.
