b. carbon dioxide
c. nitrogen
d. hydrogen
b. epiglottis
c. bronchiole
d. laryngopharynx
Answer:
The correct answer is option c. "bronchiole".
Explanation:
The passage of airway within the lungs is known as bronchus. However, air exchange does not happen in the bronchus, it happens in small air sacs named alveoli. The smaller versions of the bronchus are known as the bronchiole, which branches further until it becomes the alveoli, the structure at which air exchange takes place.
Question 1
The excretory system lets go of wastes in the body.
A. True
B. False
Question 2
The endocrine system includes organs such as the:
A. Stomach and intestines.
B. Arms and legs.
C. Spinal cord
D. Bones and muscle
Question 3
The digestive system usually involves breaking down food in order for a body to use it as an energy source. (im pretty sure i know this one...)
A. True
B. False
Question 4
Which body system has a main focus on the heart, blood and veins?
A. Skeletal
B. Urinary
C. Circulatory
D. Nervous
Question 5
Which body system deals mainly with the lungs?
A. Respiratory
B. Circulatory
C. Excretory
D. Skeletal
thats all