Delivering single shocks in succession to stimulate the frog heart ______
A) resulted in wave summation
B) did not increase the height of the ventricular systole wave
C) resulted in fused tetanus
D) increased the height of the ventricular systole wave
Answer: B) did not increase the height of the ventricular systole wave
You might also like to view...
Dynamic equilibrium receptors are found in the:
A) oval window B) cochlea C) semicircular canals D) malleus E) vestibule
Answer the following statements true (T) or false (F)
1. The lungs are composed of five lobes: three in the left lung and two in the right lung. 2. Surfactant is a slippery fluid that allows the lungs to rub against the chest wall with very little friction. 3. A pneumothorax can result in a collapsed lung. 4. The respiratory system needs to exist because most of our body cells are not in contact with the air. 5. The main function of the diaphragm is to increase the air pressure in the chest cavity.
Regarding blood volume reflexes, "filling time" is defined as the
A) amount of blood ejected by a ventricle during a single beat. B) flow of venous blood into the right atrium. C) amount of blood pumped by the left ventricle in one minute. D) duration of atrial systole. E) duration of ventricular diastole.
The term cancer refers to
A) dysplasia B) hyperplasia C) metaplasia D) malignant neoplasm