Practice Question
Arrector pili are responsible for which action?
Answer Choices:
Correct Answer:
Appearance of goose bumps.
Rationale:
Arrector pili muscles are tiny involuntary muscles attached to hair follicles in the dermis.
🟡 When these muscles contract (e.g., due to cold or emotional stimuli), they cause the hair to stand upright, creating "goose bumps."
🟡 This is part of the body's thermoregulatory and sympathetic response mechanism.
🟡 Though minimal in humans, this response is more functional in furry mammals.
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This question is from Anatomy &Physiology~2025 Exam 1 which contains 30 questions.
More Questions from This Exam
What do ceruminous glands secrete?
Answer Choices:
A. Ear wax.
B. Keratin.
C. Oily sebum.
D. Mucus.
What cavity of the heart normally has the thickest wall?
Answer Choices:
A. Left atrium
B. Right ventricle.
C. Left ventricle.
D. Right atrium.
What is the function of the thrombocytes
Answer Choices:
A. Transport respiratory gases.
B. Defend against infection.
C. Form connective tissue.
D. Play a role in blood clotting.
An over-production of cerumen can accumulate in which area?
Answer Choices:
A. On the teeth.
B. On the eyelids and eyes.
C. In the nose.
D. In the external ear canals.
Which organ is part of both the male reproductive system and the urinary system
Answer Choices:
A. Urethra.
B. Ureter.
C. Epididymis.
D. Testis.
Question Details
- Category: HESI A2
- Subcategory: Anatomy & Physiology Exam(s)
- Domain: Anatomy & Physiology~2025
- Answer Choices: 4