Get premium membership and access questions with answers, video lessons as well as revision papers.
During inspiration the diaphragm contracts drawning down, creating a vacuum in the thoracic cavity.This vacuum inflates the lungs by drawing air into the body through the windpipe.
During expiration the diaphragm relaxes allowing air to flow out as the lungs deflate which is similar to the way an inflated balloon deflates when released.
DALMUS AKAMA answered the question on October 6, 2017 at 09:04
- How would one find out from a sample of urine whether a person is suffering from diabetes mellitus?(Solved)
How would one find out from a sample of urine whether a person is suffering from diabetes mellitus?
Date posted: October 5, 2017. Answers (1)
- Why does glucose not normally appear in urine even though it is filtered in the mammalian Bowman’s capsule?(Solved)
Why does glucose not normally appear in urine even though it is filtered in the mammalian Bowman’s capsule?
Date posted: October 5, 2017. Answers (1)
- How can high blood sugar level in a person be controlled?(Solved)
How can high blood sugar level in a person be controlled?
Date posted: October 5, 2017. Answers (1)
- Distinguish between diabetes mellitus and diabetes insipidus(Solved)
Distinguish between diabetes mellitus and diabetes insipidus
Date posted: October 5, 2017. Answers (1)
- Describe the role of the following hormones in homeostasis
Aldosterone(Solved)
Describe the role of the following hormones in homeostasis
Aldosterone
Adrenaline
Date posted: October 5, 2017. Answers (1)
- 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)