Asked by Sofiea Adila on Jul 08, 2024
Verified
Bob was completely bald on the top of his head by the time he was 35 years of age. Bob noticed he produced abundant sweat on his head when he exercised. He also noticed that his scalp was no longer oily. Which of the following changes account for the observations?
(1) He has fewer functional hair follicles now.
(2) He has fewer functional sebaceous glands now.
(3) He has fewer merocrine sweat glands now.
(4) He has fewer apocrine sweat glands now.
A) 1, 2, 3, 4
B) 1, 2, 3
C) 1, 2, 4
D) 1, 3, 4
E) 1, 2
Sebaceous Glands
Sebaceous glands are small oil-producing glands in the skin that release sebum to lubricate and waterproof the skin and hair.
Merocrine Sweat Glands
Sweat glands that secrete their product directly onto the skin's surface without losing any cellular components, involved primarily in body temperature regulation.
Apocrine Sweat Glands
Sweat glands that produce a more viscous sweat, found in specific body areas and active from puberty onwards.
- Familiarize oneself with the architecture and tasks of several types of hair.
- Identify the anatomical structure of hair and hair growth factors.
Verified Answer
SS
Samantha SuleckiJul 08, 2024
Final Answer :
E
Explanation :
Bob's observations can be explained by having fewer functional hair follicles (leading to baldness) and fewer functional sebaceous glands (leading to a less oily scalp). The production of abundant sweat suggests that his merocrine sweat glands are still active, and apocrine sweat glands, which are mainly located in the armpit and groin area, would not significantly affect the observations related to his scalp.
Learning Objectives
- Familiarize oneself with the architecture and tasks of several types of hair.
- Identify the anatomical structure of hair and hair growth factors.