Question

1. which of the following sequences represents the path that food takes through the digestive system after it is consumed by a person?

a) mouth → large intestine → small intestine → liver
b) mouth → stomach → small intestine → large intestine
c) mouth → large intestine → small intestine → stomach
d) mouth → liver → small intestine → large intestine

1. which two body systems are primarily responsible for delivering oxygen to an humans cells and removing carbon dioxide?

a) digestive and excretory system
b) excretory and respiratory system
c) nervous and cardiovascular system
d) cardiovascular and respiratory system
consider a scenario where an individual has been living with just one kidney since birth, as per their doctors advice. they are due for their annual urine test to monitor their kidneys health.

1. which of the following is the primary concern doctors are evaluating when conducting urine tests for someone with only one kidney?

a) to check for the effective removal of nitrogenous waste from the body
b) to assess oxygen levels in the bloodstream
c) to monitor nutrient absorption in the digestive system
d) to ensure adequate replacement of red blood cells

1. how does the liver contribute to the excretory systems function?

a) it redirects blood flow in the body.
b) it converts toxic compounds in blood to less toxic compounds.
c) it supplies oxygen to the blood.
d) it produces hemoglobin for red blood cells.

Explanation:

1. Question 1:

• The digestive system path is mouth (initial digestion) → stomach (further digestion) → small intestine (nutrient absorption) → large intestine (water absorption and waste formation).

1. Question 2:

• The respiratory system takes in oxygen and releases carbon dioxide. The cardiovascular system (blood circulation) transports oxygen to cells and carbon dioxide away from cells.

1. Question 3:

• Kidneys' main function is to remove nitrogenous waste (like urea) from the body. A urine test for a one - kidney person would check this function.

1. Question 4:

• The liver detoxifies the blood by converting toxic compounds (e.g., ammonia) to less toxic ones (e.g., urea).

Answer:

1. B. Mouth → stomach → small intestine → large intestine
2. D. cardiovascular and respiratory system
3. A. To check for the effective removal of nitrogenous waste from the body
4. B. It converts toxic compounds in blood to less toxic compounds.