A & P 2 - Quiz 2

Compared to arteries, veins

Have thinner walls

Sustained elevated arterial blood pressure above 140/90 mm HG is a condition known as?

Hypertension

Peripheral Resistance

Increases as blood viscosity increases

An accumulation of lymph in a region where lymphatic drainage has been blocked is called

Lymphedema

Which of following is not a lymphocytes?

Macrophages

The muscular layer in the wall of a blood vessel is the tunica

Media

Identify the structure labeled "2"?

Medullary Cord

Various types of macrophages are derived from

Monocytes

The arteries that are also called distributing arteries are the ?

Muscular Arteries

Specialized Lymphatic capillaries called lacteals are

Necessary for the transport of dietary lipids

The external carotid artery serves the skin and muscles of the head and

Neck

The friction blood encounters as it flows through the vessels is called?

Peripheral Resistance

_____________ are clusters of lymphatic nodules deep to the epithelial lining of the small intestine.

Peyers Patches

The cells responsible for the production of circulating immunoglobulin's are ________ cells.

Plasma

Blood flow through a capillary is controlled by the?

Precapillary Sphincter

Aldosterone will

Promote an increase in blood pressure

The alternating expansion and recoil of an artery that occurs with each beat of the left ventricle creates a pressure wave known as?

Pulse

Each of the following will lead to a decrease in blood pressure except

Release of Renin

Which of the following processes provides a long term response to changes in blood pressure?

Renal regulation

The condition known as ______ is characterized by the formation of fatty plaques within the wall of arteries.

Stenosis

If the thymus shrank and stopped making thymosins, we would expect to see an immediate decrease in the number of?

T Cells

Most of the lymph returns to the venous circulation by way of the

Thoracic Duct

Which of the following is not a secondary lymphoid tissue or organ?

Thymus

__________ Are large lymphatic nodules that are located in the walls of the pharynx.

Tonsils

Histologically, the ______ is squamous epithelium supported by a sparse connective tissue layer?

Tunica Intima

Which layer of a blood vessel contains concentric sheets of smooth muscle tissues?

Tunica Media

The correct sequence of layers of a typical blood vessel, from superficial to deep, are?

Tunica externa, tunica media, tunica intima

Distension of the superficial veins caused by weakened valves is termed?

Varicose Veins

The _________ are small blood vessels that nourish tissue components in the wall of large arteries and veins?

Vasa Vasorum

What effect dies the sympathetic nervous syst4m have on the diameter of blood vessels?

Vasoconstriction

Large lymphatic vessels have a wall structure most similar to which blood vessel?

Veins

After blood leaves the capillaries, it enters the

Venules

Areas of the spleen that contain large aggregations of lymphocytes are known as

White Pulp

Capillaries that have a complete lining are called

continuous Capillaries

The lymphatic system is composed of all the following except?

the venae cavae

The primary lymphoid tissues include

the bone marrow and thymus

All of the following are true of the thymus gland except that it

Activates B Cells

Which statement best describes arteries?

All carry blood away from the Heart

A _______ is a bulge, or weakened wall, of an artery.

Aneurysm

A substance that provokes an immune response is called an?

Antigen

The arteries that directly feed into the capillary beds are called?

Arterioles

The smallest arterial branches are called

Arterioles

The cells responsible for hummoral immunity are the _____ cells?

B

Identify the dominant cell type in the area labeled "6"?

B Cells

Permitting the exchange of nutrients and gases between the blood and tissue cells is the primary functions of?

Capillaries

Identify the structure labeled "3"?

Capsule

The cells directly responsible for the cellular immunity are the _____ cells.

Cytotoxic T

The primary function of the lymphatic system is?

Defending the body against both external and internal threats.

Identify the structure labeled "1"

Efferent Lymphatic Vessel

Which of the following is not one of the three main factors influencing blood pressure?

Emotional State