Which of the following conditions causes a narrowing of airways in the respiratory system?
a. influenza
b. bronchitis
c. asthma
d. pneumonia Correct
... [Show More] answer- c. asthma
Which of the following lists the primary parts of the heart?
a. Blood cells
b. Muscle tissue split into two chambers
c. Muscle tissue split into four chambers
d. Four ventricles Correct answer- c. Muscle tissue split into four chambers
Which of the following blood component is responsible for transporting oxygen?
A. Red blood cells
B. Plasma
C. Dissolved gases
D. Leukocytes Correct answer- A. Red blood cells
Which of the following chambers pumps blood towards the lungs?
A. Left atrium
B. Right atrium
C. Left ventricle
D. Right ventricle Correct answer- D. Right ventricle
Which of the following statements best describes the function of veins?
A. Veins carry deoxygenated blood
B. Veins carry oxygenated blood
C. Veins carry blood back to the heart
D. Veins carry blood away from the heart Correct answer- C. Veins carry blood back to the heart
In which of the following organs does digestion begin?
A. Mouth
B. Stomach
C. Small intestine
D. Pancreas Correct answer- A. Mouth
In which of the following organs does breakdown of protein begins?
A. Mouth
B. Stomach
C. Small intestine
D. Pancreas Correct answer- D. Pancreas
Which of the following structures absorbs nutrients in the small intestine?
A. Mucus
B. Microvilli
C. Enzymes
D. Hormones Correct answer- B. Microvilli
Which of the following statements best describes peristalsis?
A. Muscle contractions that move food through the digestive tract.
B. The mechanical breakdown of food entering the stomach.
C. The partly digested food moving from the stomach to the small intestine.
D. Chemical digestion of food with the help of enzymes. In well-structured Correct answer- A. Muscle contractions that move food through the digestive tract
Which of the following actions is controlled by voluntary nerve signals?
a. Walking
b. Digestion
c. Heart beating
d. Breathing Correct answer- a. walking
Which of the following best describes the function of a nerve synapse?
a. it carries a nerve impulse away from the nerve body.
b. it is responsible for involuntary muscle movements.
c. it allows for the passing of signals between neurons and muscles.
d. it contains a bundle of fibers that transmit electrical impulses. Correct answer- c. it allows for the passing of signals between neurons and muscles.
Which of the following types of muscle cell are often voluntary?
a. skeletal
b. smooth
c. cardiac
d. nervous Correct answer- a. skeletal [Show Less]