11. Which of the following glands produce sebum?
a. oil glands
ʙ. salivary glands
ᴄ. pores
d. sweat glands
12. How does food travel through the digestive tract?
a. Food moves down the tube because of gravity.
b. Peristalsis in the esophagus pushes the food downward.
C. The food particles stick to the wall of the digestive tract.
d. The digestive tract is lubricated, enabling food to slide down.
13. What happens to the body when the kidney stops working?
a. The body sweats a lot.
b. The body will develop new kidneys.
c. The body becomes healthy and strong.
d. The body accumulates poisonous substances in the blood.
14. What is the role of the microvilli in the small intestine?
a. They secrete acid.
b. They aid in the physical digestion of food.
C. They absorb nutrients from the digested food.
d. They filter out harmful substances from the food.
a. oil glands
ʙ. salivary glands
ᴄ. pores
d. sweat glands
12. How does food travel through the digestive tract?
a. Food moves down the tube because of gravity.
b. Peristalsis in the esophagus pushes the food downward.
C. The food particles stick to the wall of the digestive tract.
d. The digestive tract is lubricated, enabling food to slide down.
13. What happens to the body when the kidney stops working?
a. The body sweats a lot.
b. The body will develop new kidneys.
c. The body becomes healthy and strong.
d. The body accumulates poisonous substances in the blood.
14. What is the role of the microvilli in the small intestine?
a. They secrete acid.
b. They aid in the physical digestion of food.
C. They absorb nutrients from the digested food.
d. They filter out harmful substances from the food.
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Answer:
sebaceous gland
11.sebaceous gland, small oil-producing gland present in the skin of mammals. Sebaceous glands are usually attached to hair follicles and release a fatty substance, sebum, into the follicular duct and thence to the surface of the skin.
12.Food moves through your GI tract by a process called peristalsis. The large, hollow organs of your GI tract contain a layer of muscle that enables their walls to move. The movement pushes food and liquid through your GI tract and mixes the contents within each organ.
13.If your kidneys stop working completely, your body fills with extra water and waste products. This condition is called uremia. Your hands or feet may swell. You will feel tired and weak because your body needs clean blood to function properly
14.Every cell lining the small intestine bristles with thousands of tightly packed microvilli that project into the gut lumen, forming a brush border that absorbs nutrients and protects the body from intestinal bacteria.
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