This type of lymphocyte is responsible for recognizing and destorying cancer cells.

A. T-cell

B. Natural killer or NK cell

C. B-cell

D. Monocyte

E. Macrophage

End diastolic volume has just increased by 20 ml. which of the following statements is true concering the next cardiac cycle (Heart Beat)?

A. the SV of the next cardiac cycle will be increased

B. the cardiac output will be increased

C. the parasym. nervous systm could be responsible

D. 2 of the above

All circulating formed elements originate from a stem cell known as the 

A. Osteocyte

B.  Hemocytoblast

In order to vasoconstrict a muscular artery, input from the ___ system must be ___.

A. parasympathetic nervous, increased

B. sympatheric nervous, increased

When B-cells are activated, they clone into __ that release ___.

A. Macrophage; cytokins

B. Plasma cells; antibodies

Muscous, Saliva, and tears contain secrections called ____ capable of digesting cell walls.

A. Lysozyes

B. Perforins

Which of the following will decrease SV?

A. spleen

B. Tonsils

C. Thymus

At resting H.R., the overlap of the actin and myosin filamnets in cardiac myofibers are:

A. shorter than optimum overlap length (Lo)

B. at the optium overlap

The composition of lymph includes which of the following?

A. Ions, water, amino acids, glucose, urea, fibrogen

B. Vitamins, free fatty acids, erythrocytes

Cardias muscle tissue is composed of cells:

A. with slow myosin ATPase

B. Tha have limited mitochondria 

Non-specific body defenses include:

A. epithelial and musosal membranes

B. Can be activated by cytokines

C. requires a plasma cell to manufacture anti-bodies

D. All

Anti-body mediated immunity:

A. only involves T-cells

B. can be activated by cytokines

C. requires a plasma cell to manufacture anti-bodies

D. B & C

If the baroreceptors decrease their activity, to the medulla in response to a change in blood pressure, the output response from the medulla would be to ___ to return the pressure back to hemostatsis. Assume a constant resistance:

A. Increase sympatheric stimulation to the SA & AV nodes & heart muscle fibers

B. Increase parasympatheric stimulation to the SA & AV nodes.

Natural passive immunity is:

A. Derived from a vaccinations

B. derirved from mom the child

The type of capillary found in glandular organs would most likely be:

A. fenestrated or porous

B. Continous

The "plateau phase" of the myocyte action potential is caused by ___ influx

A. Fast Na+

B. Slow Ca++

Thyrotropic releasing hormones targets the thyrotroped of what gland?

A. thryroid gland

B. Anterior Pituitary

The "muscle pump" is a term described by which of the folllowing?

A. the heart contractions

B. the compression of veins and lympathic vessels during skeletal muscle activity 

If you over-hydrate, your blood volume and blood pressure will increase. What will your cardiovascular system do to compensate for the rise in pressure?

A. Visodilate the arteries

B. increase the heart rate

This organ contains reticular tissue, recycles hemoglobin proteins and stores iron.

A. lung

B. Spleen

Which of the following are functions of the lymphatic system?

A. fluid recovery 

B. Immunity

C. Lipid Absorption

D. All

The left A-V valve is closed 

A. when the left atrium is in systole

B. when the papillary msucles are contracting

Decreased CO2 levels and a normal pH in the tissues

A. indicates decreased metabolism

B. would promote decreased blood flow to the tissues

C. both

The term "isovolumetric relaxation" refers to 

A. the point in time when the ventricles are in diastole and no blood is moving

B. the point in the time when the ventricles are in systoe  and no blood is moving

If your body's defense attacks your own cells, this is called ____ disease

A. Autoimmune

B. Anabolic

A fever is initited by chemicals called __ that are secreted from __.

A. pyrogens; the hypothalamus

B. pyrogens; leukocytes

At the venous and of the capillary, the dominant force for capillary exchange is:

A. increased capillary hydrostatic pressure

B. reduced capillary re-absorption

C. obstructed lymphatic drainage

D. All