11. What is the pulse rate of a normal person?
13. What is the size of human heart?
14. Name the largest artery in the human body.
15. Name the parts of excretory system in humans.
respiration
8. Name the structure of gascous exchange in
(a) Earthworm and (b) Housefly
9. What are the component of blood?
10. What are the composition of sweat?
12. Define capillaries
16. Name the instrument used to measure blood pressure
17. What is the role of blood platelets.
Answers
Answer:
11: Your pulse rate is the number of times your heart beats per minute. A normal resting heart rate should be 60–100 beats per minute, but it can vary from minute to minute.
13:it is a little larger than the size of your fist.
14: Aorta
15: lungs and kidneys are the main parts of the excretory system
8: a- skin, b- tracheae
9: It has four main components: plasma, red blood cells, white blood cells, and platelets
10:These components are composed primarily of water but also small amounts of minerals (such as sodium, potassium, calcium, and magnesium), metabolites (such as lactate, ammonia, and urea), and unmetabolized pharmaceutical drugs.
12: Capillaries are tiny blood vessels connecting arteries to veins. These blood vessels carry oxygen and nutrients to individual cells throughout the body.
16:The sphygmomanometer
17:they are small, colorless cell fragments in our blood that form clots and stop or prevent bleeding.
Explanation: