Chapter 20 lymphatic system

Where does lymph originally come from?

interstitial space

A lacteal is located within the

intestinal villus

Thymosin

is a hormone

A person has a severe streptococcal pharyngitis (sore throat). He is most likely to develop

painful cervical lymph nodes.

What structures are located near the opening of the nasal cavity in the upper throat and are also called the adenoids?

pharyngeal tonsils

The subclavian vein

receive lymph from the large lymphatic ducts.

Lymph from the right arm and the right side of the head and thorax drains into the

right lymphatic duct

The right lymphatic duct and the thoracic duct empty into the

subclavian veins

Why does lymph contain protein?

Protein leaks out of the capillaries into the tissue spaces and is absorbed into the lymphatic capillaries.

What happens if the lymphatic vessels and nodes are removed from the right axillary region?

The right arm will become edematous

Which of the following best describes the lymphatic capillaries?

They have large pores and follow venous pathways.

Which of the following is least associated with tonsils?

Thrombopoiesis

Elephantiasis is

edema formation in response to impaired lymphatic drainage.

Lymph is

formed from tissue fluid.

The spleen, thymus gland, tonsils, and lymph nodes are

lymphoid organs

What structure is concerned with the processing and maturation of T lymphocytes?

thymus gland

Which lymphoid organ is located in the ventral cavity, thoracic cavity, and mediastinum?

thymus gland

What is the term that refers to the removal of the palatine tonsils?

tonsillectomy

If proteins are allowed to accumulate in the interstitial space, they will

"hold water" and cause edema

What is (are) the lymphoid structure(s) that is (are) generally removed during a mastectomy?

Axillary lymph nodes

Lymph node dissection is most likely to cause

Edema

With which of the following is MALT least associated?

Erythropoiesis

Which of the following is caused by a viral infection involving the lymph nodes and is called the "kissing disease"?

Infectious mononucleosis

With which of the following are lymph nodes populated?

Lymphocytes and macrophages

Which of the following is least characteristic of the pharyngeal tonsils?

Most commonly removed by tonsillectomy

This organ engages in erythropoiesis in the fetus, produces lymphocytes in the adult, and stores platelets.

Spleen

Which of the following is (are) described as partially encapsulated lymph nodes located in the throat area?

Tonsils

Which of the following conditions is most likely to cause a platelet deficiency?

a hyperactive spleen

A young woman is diagnosed with breast cancer. She is most apt to have

a sentinel node biopsy before the mastectomy is performed.

Lymphatic capillaries

absorb tissue fluid and transport it toward the heart.

Which of the following is true about lymph? It is

absorbed by lymphatic capillaries from the interstitium.

What is the similarity between the thoracic duct and the right lymphatic duct? Both

are large lymphatic ducts that collect lymph from smaller lymphatic vessels.

The inguinal lymph nodes

are located in the groin.

What is the name of the lymph nodes that drain the head and neck region?

cervical

Red pulp and white pulp

compose splenic tissue.

The lymphatic circulation

is most closely associated with the venous side of the circulation.

The thoracic duct

receives lymph from large lymphatic vessels that drain the left side of the body.

The spleen

removes worn-out blood cells from circulation.

An overly active spleen may prematurely remove platelets from the circulation, thereby predisposing a person to

thrombocytopenia, bleeding