EMBRYOLOGY
RESPIRATORY SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Errector pili muscles make hair stand up
|
|
|
Shivering increases heat
|
|
|
Muscles do not help regulate body temperature
|
|
|
Shivering decreases heat
|
Detailed explanation-1: -The primary physiologic responses to cold exposure are brown adipose tissue (BAT) thermogenesis and skeletal muscle shivering, which generate heat, and the constriction of blood vessels (vasoconstriction), which prevents heat loss.
Detailed explanation-2: -Shivering is a remarkable thermogenic response in homeothermic animals, including humans, that involves rapid, repeated skeletal muscle contractions leading to heat production through the inefficiency of ATP utilization (Jubrias et al.
Detailed explanation-3: -Shivering is muscle activity that generates heat and warms the body. Similarly, some insects vibrate their wings for a while before flight, heating the muscles to the temperature at which they work best. When an animal shivers in the cold, a large amount of heat is generated in the muscles.
Detailed explanation-4: -Shivering is rhythmic skeletal muscle contraction that generates heat by stimulating ATP hydrolysis thereby raising the body temperature during cold conditions.