Decreased parasympathetic (vagus) stimulation to the heart results in a situation known as __________.
a. tachycardia
b. bradycardia
c. carditis
d. stenosis
Answer: a. tachycardia
You might also like to view...
Which of the following secretion is produced in stomach?
a. GIF b. HCL c. Pepsin d. Gastrin e. Insulin
The resting membrane potential is mainly determined by __________.
A)the differential permeability of the plasma membrane to K+ and other ions B)the concentration of Cl- C)the concentration of protein anions outside the cell D)the concentration of Na+
Which of the following structures is labeled A in the diagram?
a) axon terminal b) trigger zone c) cell body d) peripheral process e) dendrites
Answer the following statements true (T) or false (F)
1. Artificial passive immunity can be effective even after a person has been exposed to the infectious organism. 2. The surface protein on a cancer cell or a microorganism can be an antigen. 3. An antibody and an antigen fit together like a key in a lock. 4. Antigens have the ability to neutralize specific toxins in the body. 5. When an antigen and an antibody unite, macrophages can destroy the antigen more efficiently.