Asked by elizabeth lugones on Jul 16, 2024
Verified
On coming inside from the cold, students notice that their cheeks are red. This results from
A) constriction of the blood vessels in the epidermis of the cheeks.
B) dilation of the blood vessels in the dermis of the cheeks.
C) damage to the epidermis by the cold.
D) constriction of the sweat glands in the cheeks.
E) increased permeability of superficial vessels.
Epidermis
The outermost layer of skin, serving as a protective barrier against environmental elements.
Dermis
The layer of skin beneath the epidermis that contains nerve endings, sweat glands, and blood vessels.
Dilation
The process of expansion or widening in size, often referring to the opening of the cervix during childbirth or the dilation of blood vessels.
- Outline the functions of the skin in safeguarding the body, regulating temperature, and enabling sensory perception.
Verified Answer
ZT
Zackery TudorJul 19, 2024
Final Answer :
B
Explanation :
The redness in the cheeks after coming in from the cold is due to the dilation of blood vessels in the dermis of the cheeks. This increases blood flow to the area, causing the red appearance.
Learning Objectives
- Outline the functions of the skin in safeguarding the body, regulating temperature, and enabling sensory perception.