Question

question 4 (1 point)

1. the _______ system circulates blood and delivers materials throughout the body.

a digestive
b respiratory
c circulatory
d endocrine
question 5 (1 point)
the _______ system gets rid of cellular waste.
a excretory
b endocrine
c digestive
d integumentary

Explanation:

Question 4

To solve this, we analyze each option:

• Option a (digestive): The digestive system is for breaking down food, not blood circulation.
• Option b (respiratory): The respiratory system is for gas exchange (oxygen and carbon dioxide), not blood circulation.
• Option c (circulatory): The circulatory system (including the heart, blood vessels, and blood) is responsible for circulating blood and delivering nutrients, oxygen, etc., throughout the body.
• Option d (endocrine): The endocrine system is for hormone production and regulation, not blood circulation.

We analyze each option:

• Option a (Excretory): The excretory system (e.g., kidneys, bladder, skin, lungs) is responsible for removing cellular waste (like urea, excess water, carbon dioxide) from the body.
• Option b (Endocrine): The endocrine system is for hormone regulation, not waste removal.
• Option c (Digestive): The digestive system is for food breakdown and nutrient absorption, not waste removal (except for feces, which is undigested food, not cellular waste).
• Option d (Integumentary): The integumentary system (skin, hair, nails) has a minor role in waste removal (sweat), but the primary system for cellular waste removal is excretory.

Answer:

c. circulatory

Question 5