Mastering A and P (Exam 2)

Match the following area of a lymph node with its description: Subcapsular sinus.

A large, baglike structure leading into a number of small sinuses

Which of the following best describes the arrangement of lymphatic vessels?

A one-way system of vessels beginning with blind-ended lymphatic capillaries

Match the following with the appropriate description: Lymphoid tissue.

A type of loose connective tissue called reticular connective tissue; dominates all lymphoid organs except the thymus

Which term describes an area of the heart conduction system where the impulse is delayed for 0.1 sec?

AV node

Identify the lymph node structure(s) indicated by "A."

Afferent lymphatic vessels

Which of the following lists the correct order of lymph flow through the lymph node?

Afferent vessel, subcapsular sinus, medullary sinuses, efferent vessel

What is the purpose of the chordae tendineae?

Anchor the AV valves in the closed position

Indicate the valve separating the following areas of the heart: Left ventricle and aorta.

Aortic semilunar valve

Match the area of the heart with the "exit" through which the blood leaves: Left ventricle.

Aortic semilunar valve

Identify the lymphoid organ indicated by "E."

Appendix

Which of the following is true when comparing arteries and veins?

Arteries carry blood away from the heart; veins carry blood to the heart.

Identify the type of vessel indicated by "C."

Arterioles

Identify the part of the ECG indicated by "A."

Atrial depolarization

Identify the lymphatic system structures indicated by "D."

Axillary nodes

Which of the following is the most abundant cell type found in the germinal center in a lymph node?

B lymphocytes

Indicate the valve separating the following areas of the heart: Left atrium and left ventricle.

Bicuspid (mitral) valve

What makes the heart valves open and close?

Blood pressure

Identify the type of vessel indicated by "D."

Capillaries

Which sequence best describes the flow of lymph through the lymphatic system?

Capillaries, vessels, trunks, ducts

Match the following term to its description: Dendritic cell.

Captures antigens and brings them back to lymph nodes

Identify the lymphatic system structures indicated by "C."

Cervical nodes

Identify the lymphatic system structure indicated by "B."

Cisterna chyli

Match the following structure with its function: Lymphatic collecting vessels.

Collect lymph fluid draining from lymphatic capillaries

Match the following blood vessel layer with its description: Tunica intima.

Contains the endothelium (made of simple squamous epithelium)

Which of the following is not a function of lymphatic vessels?

Delivery of nutrients to tissues

Match the following structure with its function: Lymph nodes.

Distinct bean-shaped structures that "filter" lymph fluid as it is moved toward the circulatory system

Which of the following types of blood vessels have the proportionally thickest tunica media of all vessels?

Distributing arteries

Match the lymphatic structure with the correct characteristic: Right lymphatic duct.

Drains right side of the head, upper limb, and neck region

Identify the lymph node structures indicated by "F."

Efferent lymphatic vessels

Identify the type of vessel indicated by "A."

Elastic arteries

Match the following term to its description: Reticular cell.

Fibroblast-like cell that produces the reticular fiber stroma

Identify the lymph node structure(s) indicated by "C."

Germinal center

Identify the lymphatic system structures indicated by "E."

Inguinal nodes

Which statement is true of the thoracic duct?

It drains the lymph from the entire left side of the body and also the right abdomen and leg.

Which statement below describes the lymphatic system's role in relation to the cardiovascular system?

It maintains blood volume and, hence, pressure.

Identify the type of vessel indicated by "F."

Large veins

Match the following structure with its function: Lymphatic ducts.

Largest vessels; carry lymph fluid to subclavian veins

__________ inhibits fibrinolysis by competing with plasminogen and may contribute to the formation of atherosclerotic plaques.

Lipoprotein (a)

Select the lymphoid organ that cleanses the lymph

Lymph nodes

Which of the following is not a characteristic of lymph nodes?

Lymph nodes produce lymph.

What part of the lymphatic system is most closely associated with capillary beds?

Lymphatic capillaries

How are lymphatic capillaries different from blood capillaries?

Lymphatic capillaries have endothelial flap valves, but blood capillaries do not.

Which of the following vessels transport fluid back into the blood that leaks from the vascular system?

Lymphatics

Tumors that block the lymphatics or lymphatics are removed during cancer surgery may result in what condition?

Lymphedema

Identify the lymph node structure(s) indicated by "B."

Lymphoid follicle

Identify the lymph node structure(s) indicated by "D."

Medullary sinus

Which of the layers of an artery wall is regulated by the sympathetic nervous system and many hormones?

Middle layer

Failure of which heart valve would allow blood to move from the left ventricle to the left atrium?

Mitral (bicuspid) valve

Match the area of the heart with the "exit" through which the blood leaves: Left atrium.

Mitral (bicuspid) valve

What muscles prevent the atrioventricular valves from everting during ventricular contraction?

Papillary muscles

Identify the lymphoid organs indicated by "B"

Peyer's patches

Identify the type of vessel indicated by "E."

Postcapillary venule

Match the following term with its correct description: Aortic semilunar valve.

Prevents backflow of blood into the left ventricle

Match the following term with its correct description: Pulmonary semilunar valve.

Prevents backflow of blood into the right ventricle

Indicate the valve separating the following areas of the heart: Right ventricle and pulmonary trunk.

Pulmonary semilunar valve

Match the area of the heart with the "exit" through which the blood leaves: Right ventricle.

Pulmonary semilunar valve

Match the given term with its correct description: Ventricular depolarization.

QRS complex

Match the lymphatic structure with the correct characteristic: Thoracic duct.

Receives lymph from all but the right upper limb and right side of the head and thorax

Match the following with the appropriate description: Collecting lymphatic vessels.

Same three tunics as veins; the second-smallest lymph vessels

Match the following type of vessel with its structure: Muscular arteries.

Smaller vessels that distribute blood to specific body organs

Match the lymphatic structure with the correct characteristic: Lymphatic capillary.

Smallest lymphatic vessel that collects excess tissue fluid

Match the following structure with its function: Lymphatic capillaries.

Smallest lymphatic vessels that collect tissue fluid

Match the following type of vessel with its structure: Arterioles.

Smallest of the vessels that lead into capillary beds

Which of the following is a common way to distinguish an infection from cancerous growth in the lymph nodes?

Swelling due to cancer is often painless.

The bubonic plaque was named for what condition?

Swollen lymph nodes

Which of the following blood vessels is the most susceptible to atherosclerosis?

The aorta

Match the following area of a lymph node with its description: Hilum.

The indented region on the concave side of the node leading into the efferent vessels

Which of the following valves is most often faulty in the heart?

The mitral, or bicuspid, valve

Which statement is true about lymph nodes?

They have fewer efferent vessels than afferent vessels.

Match the following type of vessel with its structure: Elastic arteries.

Thick-walled, large vessels near the heart that conduct blood continuously away from the heart

Identify the lymphatic system structure indicated by "A."

Thoracic duct

Identify the lymphoid organ indicated by "B."

Thymus

Identify the lymphoid organs indicated by "A."

Tonsils

Identify the lymph node structures indicated by "E."

Trabeculae

Which of the following features is not common to both lymphatic vessels and veins?

Transport of chyle

Indicate the valve separating the following areas of the heart: Right atrium and right ventricle.

Tricuspid valve

Match the area of the heart with the "exit" through which the blood leaves: Right atrium.

Tricuspid valve

Which of the following is the correct sequence of layers in the vessel wall from outside to inside?

Tunica externa, tunica media, tunica intima

Identify the artery and vein structure indicated by "C."

Tunica media

Match the following term with its correct description: Mitral valve.

Valve between the left atrium and left ventricle

Match the following term with its correct description: Tricuspid valve.

Valve between the right atrium and right ventricle

Identify the part of the ECG indicated by "B."

Ventricular depolarization

Identify the part of the ECG indicated by "C."

Ventricular repolarization

Match the following area of a lymph node with its description: Afferent lymphatic vessels.

Vessels leading into lymph nodes

Match the following area of a lymph node with its description: Efferent lymphatic vessels.

Vessels leaving the lymph node

A metarteriole is a vessel that __________.

is intermediate between the arteriole and the capillary bed

Which vessels have a tunica media with relatively more smooth muscle than elastic tissue, and an elastic membrane on each face of the tunica media?

muscular arteries

Lymphangitis presents itself as __________.

red lines under the skin that are sensitive to touch

The lymphoid tissue's structural framework is composed of __________.

reticular connective tissue

A major function of the lymphatic system is __________.

return of tissue fluid to the cardiovascular system

The endothelium is composed of __________.

simple squamous epithelium

The role of the atrioventricular node (AV node) is to __________.

slow down impulses so that the atria can contract to fill the adjacent ventricles with blood

A condition in which the valve flaps of the heart become stiff and constrict the opening is called _________.

stenosis

A sentinel node is the first lymph node __________.

that receives lymph drainage from a body area suspected of cancer

The vessel layer that has a direct role in vasoconstriction is the __________.

tunica media

Reduction in the lumen diameter of a blood vessel as the smooth muscle contracts is known as __________.

vasoconstriction

Blood flows directly from __________ into capillary beds.

arterioles

The __________ are attached to the AV valve flaps.

chordae tendineae

When the mitral valve closes, it prevents the backflow of blood from the __________.

left ventricle into the left atrium

Large lymphatic capillaries in a lymph node spanned by crisscrossing reticular fibers are known as __________.

lymph sinuses