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