Two characteristics of adaptive immunity that distinguish it from nonspecific defense

True or false
The body's longes blood vessel is the great saphenous vein.

Increased parasympathetic stimulation of the heart

a. increases the force of ventricular contraction.

b. increases the rate of depolarization in the SA node.

c. decreases heart rate.

d. increases cardiac output.

Which type of blood vessel holds the greatest volume of blood?

Explain why an Rh− person does not have a transfusion reaction on the first exposure to Rh+ blood. Why is there a transfusion reaction the second time he or she receives the Rh+ blood?

The valve located between the right atrium and the right ventricle is the

a. aortic semilunar valve.

b. pulmonary semilunar valve.

c. tricuspid valve.

d. bicuspid (mitral) valve.

The heart valve located between the right atrium and right ventricle is called the _____ valve.

The average lifespan of a red blood cell is:

A) 24 hours.

B) 1 month.

C) 4 months.

D) about 1 year.

E) many years.

What is the average life span of a red blood cell? How does its anucleate condition affect this life span?

Which of these happens first in an cholinergic synaptic transmission?

The two types of cells found in the nervous system are _____ and _____.

In the cell cycle, the period between cell divisions is called (A) interphase (B) prophase (C) G3 phase (D) telophase (E) cytokinesis

Define physiology. Describe the relationship between physiology and anatomy.

How much heat is needed to melt 16.50 kg of silver that is initially at $20^{\circ} \mathrm{C} ?$