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TLS Online TPP Program

#Question id: 11960

Mechanical digestion, the process of breaking down large chunks of food into smaller pieces, is important because smaller pieces of food ________.

#Unit 7. System Physiology – Animal
  1. do not taste as good as larger pieces of food
  2. have more surface area for chemical digestion than do larger pieces of food
  3. are easier to excrete than are larger pieces of food
  4. are more easily stored in the stomach than are larger pieces of food
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TLS Online TPP Program

#Question id: 16113

#Unit 7. System Physiology – Animal

Which of the behavioural components may not contribute by reducing the exposure of skin to the cold?
TLS Online TPP Program

#Question id: 16114

#Unit 7. System Physiology – Animal

Which of the following hormones are thermogenic?
TLS Online TPP Program

#Question id: 16115

#Unit 7. System Physiology – Animal

Cold environmental temperatures:
TLS Online TPP Program

#Question id: 16116

#Unit 7. System Physiology – Animal

Which of the following hormones acts synergistically with sympathetic nervous system?
TLS Online TPP Program

#Question id: 16118

#Unit 7. System Physiology – Animal

Following statements are regarding to the heat production by the activation of sympathetic nervous system.
A. Activation is stimulation of β receptors in brown fat, which increases metabolic rate and heat production.
B. Activation is stimulation of α2 receptors in brown fat, which increases metabolic rate and heat production.
C. Stimulation of α1 receptors in vascular smooth muscle of skin blood vessels, producing vasoconstriction. Vasoconstriction reduces blood flow to the surface of the skin.
D. Stimulation of α1 receptors in vascular smooth muscle of skin blood vessels, producing vasodilation. Vasodilation reduces blood flow to the surface of the skin.
Which of the following combination is correct?
TLS Online TPP Program

#Question id: 16119

#Unit 7. System Physiology – Animal

Following statements are regarding to Shivering, which is the most potent mechanism for increasing heat production in the body. 
A. Cold environmental temperatures activate centers in the posterior hypothalamus during shivering, which then activate the α and γ motoneurons innervating skeletal muscle. 
B. Shivering involves skeletal muscle contracts rhythmically, generating heat and raising body temperature.
C. Shivering involves stimulation of Na+-K+ ATPase and raising body temperature.
D. Shivering involves stimulation of β receptors in brown fat, which increases metabolic rate and heat production.
Which of the following combination is correct?