Coordination and response - Homeostasis

Question 1

Homeostasis

Answer 1

the maintenance of a constant internal environment

Question 2

Hypothalamus

Answer 2

part of the brain that regulates body temperature and sends nerve impulses to effectors to alter the temperature

Question 3

Vasodilation

Answer 3

when blood vessels open up in higher temperatures (more blood, more heat radiation)

Question 4

Vasoconstriction

Answer 4

when blood vessels close so that it does not flow near the skin and loose heat energy

Question 5

Cold (3)

Answer 5

1. Vasoconstriction
2. Shivers - muscle contraction requires energy and respiration gives off heat.
3. erect- hairs erect to form an insulation coat that traps the heat in.

Question 6

Hot (3)

Answer 6

1. Vasodilation
2. sweat - water comes out to cool you down
3. evaporation - sweat evaporates which requires heat so it will absorb heat from body.