Question

Question 4
Answer the following:
(a) Explain the two processes involved in the mechanism of breathing.
(b) What is systolic pressure? Define Blood pressure.
(c) What is Haemoglobin? State it's function.
(d) State the changes that take place in the following regions during inspiration i) size of the thoracic cavity.
ii) movement of the ribs.
iii) air pressure in the lungs.
Pls reply Faast​

Answer 1

Explanation:

a) The two mechanism of breathing involves inspiration & expiration.

Indpiration is the contraction of diaphram and external coastal muscles

b) systolic blood pressure reads and measures the pressure against tge wall of artery

C) Haemoglobin is the red blood cell of human body it carries oxgen to every part of body

d) 1 size of thiracic cavity increase

2 movement of ribs decrese

3 air pressure in lungs depressed and elevated