Aldosterone
concerned with regulation of ionic balance
secreted by the cortex of adrenal glands
it increases sodium ion uptake by the gut and promotes the reabsorption of sodium ions (and therefore water) in the kidneys)
this is accompanied by elimination of potassium ions
this raises the overall level of sodium and lowers the overall level of potassium in the blood
as sodium ions are absorbed in the blood, chlorine ions follow so as to neutralize the effect of sodium ions
the production of aldosterone is regulated by the concentration of sodium ions which has an inhibiting effect, and a fall in sodium ions has a stimulating effect on the adrenal cortex
the ?ow of aldosterone is stimulated by the adreno-cortic-tropic hormone (ACTH) produced in the anterior of the pituitary gland however, the main method of control is dependent on the fact that adrenal cortex itself is somehow sensitive to the relative concentration of potassium and sodium in the blood
Adrenaline
produced by adrenal glands
in high concentrations, it increases hydrolysis of glycogen and increases blood sugar
it is usually released in emergency cases to increase glucose level for respiration
this releases energy for the emergency
Mohaissack answered the question on October 5, 2017 at 14:50
- What is the role of blood clotting in homeostasis?(Solved)
What is the role of blood clotting in homeostasis?
Date posted: October 5, 2017. Answers (1)
- Explain the part played by antidiuretic hormone in homeostasis(Solved)
Explain the part played by antidiuretic hormone in homeostasis
Date posted: October 5, 2017. Answers (1)
- Discuss the role of the following hormones in blood sugar control (i) Insulin (ii)Glucagon(Solved)
Discuss the role of the following hormones in blood sugar control
(i) Insulin
(ii) Glucagon
Date posted: October 5, 2017. Answers (1)
- What is the biological significance of maintaining a relatively constant sugar level in a human body?(Solved)
What is the biological significance of maintaining a relatively constant sugar level in a human body?
Date posted: October 5, 2017. Answers (1)
- Explain why eating a meal with too much salt leads to production of a small volume of concentrated urine(Solved)
Explain why eating a meal with too much salt leads to production of a small volume of concentrated urine
Date posted: October 5, 2017. Answers (1)
- Explain why some desert animals excrete uric acid rather than Water(Solved)
Explain why some desert animals excrete uric acid rather than Water
Date posted: October 5, 2017. Answers (1)
- State the ways by which desert mammals conserve water(Solved)
State the ways by which desert mammals conserve water
Date posted: October 5, 2017. Answers (1)
- State the importance of osmoregulation(Solved)
State the importance of osmoregulation
Date posted: October 5, 2017. Answers (1)
- What is the meaning of osmoregulation?(Solved)
What is the meaning of osmoregulation?
Date posted: October 5, 2017. Answers (1)
- Explain why individuals with smaller sizes require more energy per unit body weight than those with larger sizes.(Solved)
Explain why individuals with smaller sizes require more energy per unit body weight than those with larger sizes.
Date posted: October 5, 2017. Answers (1)
- State the advantages that organisms with small surface area to volume ratio experience over those with larger(Solved)
State the advantages that organisms with small surface area to volume ratio experience over those with larger
Date posted: October 5, 2017. Answers (1)
- Why does body temperature of a healthy person rise up to 37 degrees Celsius on a hot humid day?(Solved)
Why does body temperature of a healthy person rise up to 37 degrees Celsius on a hot humid day?
Date posted: October 5, 2017. Answers (1)
- How do mammals regulate body temperature?(Solved)
How do mammals regulate body temperature?
Date posted: October 5, 2017. Answers (1)
- Explain the advantage gained by possessing a constant body temperature(Solved)
Explain the advantage gained by possessing a constant body temperature
Date posted: October 5, 2017. Answers (1)
- Why is constant body temperature maintained by mammals?(Solved)
Why is constant body temperature maintained by mammals?
Date posted: October 5, 2017. Answers (1)
- Why is homeostatic control necessary?(Solved)
Why is homeostatic control necessary?
Date posted: October 5, 2017. Answers (1)
- Name the common kidney diseases(Solved)
Name the common kidney diseases
Date posted: October 5, 2017. Answers (1)
- State and explain the adaptations of proximal convoluted tubule to its function(Solved)
State and explain the adaptations of proximal convoluted tubule to its function
Date posted: October 5, 2017. Answers (1)
- Describe how the human kidney functions(Solved)
Describe how the human kidney functions
Date posted: October 5, 2017. Answers (1)
- State the functions of the liver(Solved)
State the functions of the liver
Date posted: October 5, 2017. Answers (1)