Endocrine system part 6

Question 1

Steroid hormones help control

Answer 1

Metabolism.
Inflammation.
Immune functions.
Salt and water balance.
Development of sexual characteristics.
land the ability to withstand illness and injury

Question 2

What does the adrenal medulla secrete?

Answer 2

adrenaline

Question 3

what is adrenaline secreted by

Answer 3

adrenal medulla

Question 4

Main effects of adrenalin

Answer 4

lincrease in the rate and strength of the heartbeat resulting in increased blood pressure
lblood shunted from the skin and viscera to the skeletal muscles, coronary arteries, liver, and brain
lrise in blood sugar levels because liver glycogen is converted to glucose - provide energy
loxygen content of blood raised because rate and depth of breathing increase, respiration increased - more energy released
lpupils dilate - for better vision
lclotting time of the blood is reduced
lincreased sweating for increased cooling
lreduction of digestive system
lincreased mental alertness to be aware and think

Question 5

Control of Adrenalin

Answer 5

As adrenalin is rapidly broken down by the body there is no feedback mechanism for its control.
There is no problem with over- or under-secretion by the body.

Question 6

Cortisol

Answer 6

Increases the body’s ability to resist stress of kinds, it is an anti-flammatory and anti-allergic.

Question 7

aldosterone causes what

Answer 7

increased reabsorption of sodium ions