Question

The primary function of the _________________ is to supply the blood with oxygen so that the blood can deliver oxygen to all parts of the body. (1 point) Responses digestive system digestive system cardiac system cardiac system respiratory system respiratory system endocrine system

Answer 1

respiratory system

Answer 2

The ___________ is a strong wall of muscle that contracts to create a suction in the chest to draw in air and expand the lungs. When the muscle relaxes, the chest cavity decreases and the air is pushed out.

Answer 3

The diaphragm

Answer 4

Which of the following statements best describes how oxygen enters the lungs? (1 point) Responses Oxygen enters the lungs through the trachea, which branches into two tubes called the bronchi, which lead to the lungs. Oxygen enters the lungs through the trachea, which branches into two tubes called the bronchi, which lead to the lungs. Oxygen enters the lungs through the diaphragm, which branches into two tubes called the trachea. Oxygen enters the lungs through the diaphragm, which branches into two tubes called the trachea. Oxygen enters the lungs through bronchi, which branches into two tubes called the bronchioles. Oxygen enters the lungs through bronchi, which branches into two tubes called the bronchioles. Oxygen enters the lungs through the trachea, which branches into the alveoli.

Answer 5

Oxygen enters the lungs through the trachea, which branches into two tubes called the bronchi, which lead to the lungs.

Answer 6

External respiration takes place in the ____________________. (1 point) Responses bronchi bronchi trachea trachea alveoli alveoli diaphragm diaphragm

Answer 7

External respiration takes place in the alveoli.

Answer 8

Oxygen is carried by the ______________, which is part of the red blood cell.

Answer 9

Oxygen is carried by the hemoglobin, which is part of the red blood cell.

Answer 10

Select the answer below that best describes how the lungs are kept free of germs and dirt from the air. (1 point) Responses The alveoli act as filters for the lungs collecting particles of dirt and germs to be exhaled when the diaphragm relaxes. The alveoli act as filters for the lungs collecting particles of dirt and germs to be exhaled when the diaphragm relaxes. Tiny hairs known as cilia clean the trachea of dirt and germs before it can enter the lungs. Tiny hairs known as cilia clean the trachea of dirt and germs before it can enter the lungs. Hairs known as cilia, found inside the alveoli, collect the dirt and germs to be expelled from the lungs. Hairs known as cilia, found inside the alveoli, collect the dirt and germs to be expelled from the lungs. Mucus found in the bronchial tubes collects dirt and germs that gets into your lungs. Tiny hairs called cilia work to sweep out the debris collected to keep your lungs clean.

Answer 11

Tiny hairs known as cilia clean the trachea of dirt and germs before it can enter the lungs.

Answer 12

The term “a smoker’s cough” refers to ________________ , which is caused by a long-term inflammation of the bronchi. (1 point) Responses emphysema emphysema lung cancer lung cancer chronic bronchitis chronic bronchitis cilia degeneration

Answer 13

The term "a smoker's cough" refers to chronic bronchitis, which is caused by a long-term inflammation of the bronchi.

Answer 14

Janet smoked cigarettes since she was sixteen. Now at age 45, she suffers from shortness of breath, coughing, fatigue, sleep and heart problems, weight loss, and depression. Her condition is caused by a chronic lung condition that affects the alveoli. Janet suffers from: (1 point) Responses emphysema emphysema lung cancer lung cancer chronic bronchitis chronic bronchitis cilia degeneration

Answer 15

Janet suffers from emphysema, a chronic lung condition that affects the alveoli.

Answer 16

Both marijuana and tobacco smoke contain__________________, which are substances that cause cancer. (1 point) Responses Delta-9-tetrahydrocannabinol (THC) Delta-9-tetrahydrocannabinol (THC) Thiamine and dextrose Thiamine and dextrose Enzymes Enzymes Carcinogens

Answer 17

Carcinogens