Principles of Homeostasis：练习题

• a.

  To initiate a corrective response that reverses the deviation from the set point

• b.

  To permanently stop all hormonal and nervous activity in the body

• c.

  To enhance and amplify the initial change continuously

• d.

  To stimulate the sensory receptor to increase sensitivity to external signals

• a.

  X: Receptor, Y: Control centre, Z: Effector

• b.

  X: Effector, Y: Control centre, Z: Receptor

• c.

  X: Control centre, Y: Effector, Z: Receptor

• d.

  X: Receptor, Y: Effector, Z: Control centre

• a.

  Skin receptors detect decrease \(\rightarrow\) endocrine glands release glucagon \(\rightarrow\) vasodilation of skin capillaries \(\rightarrow\) heat loss increases

• b.

  Skin arterioles detect decrease \(\rightarrow\) negative feedback loop ceases \(\rightarrow\) metabolic rate decreases to conserve core heat

• c.

  Hypothalamus detects decrease \(\rightarrow\) sweat glands increase sweat secretion \(\rightarrow\) evaporative cooling occurs \(\rightarrow\) body temperature rises

• d.

  Hypothalamus detects decrease \(\rightarrow\) nerve impulses sent to effectors \(\rightarrow\) vasoconstriction of skin arterioles and shivering \(\rightarrow\) body temperature returns to normal

• a.

  The maintenance of a constant internal environment

• b.

  The voluntary nervous control of movement in response to stimuli

• c.

  The regulation of the external environment surrounding an organism

• d.

  The total breakdown of stored energy reserves during vigorous exercise

• a.

  Total loss of both sensation and voluntary movement in the arm

• b.

  Loss of voluntary movement, but involuntary reflex responses remain intact

• c.

  Loss of sensation from the arm, but the ability to move the arm remains intact

• d.

  Loss of ability to move the arm, but sensations from the arm remain intact

先自己写一遍答案，再对照解题步骤。

先自己写一遍答案，再对照解题步骤。