Quiz on Human Anatomy and Physiology

T and B lymphocytes ________.

• are polymorphonuclear

• are involved with specific immune function

• proliferate excessively in leukopenia

• 4. are most active against parasitic worms 

Hemophilia is characterized by ________.

• inadequate production of heparin

• inadequate production of clotting factors

• excessive production of fibrinogen

• excessive production of platelets

Thrombocytes are more accurately called ________.

• clotting factors

• megakaryoblasts

• megakaryocytes

• platelets

Which of the following statements about albumin is true?

• It draws water out of the blood vessels and into the body's tissues.

• It is the most abundant plasma protein.

• It is produced by specialized leukocytes called plasma cells.

• All of the above are true.

Which of the following describes a neutrophil?

• abundant, agranular, especially effective against cancer cells

• abundant, granular, especially effective against bacteria

• rare, agranular, releases antimicrobial defensins

• rare, granular, contains multiple granules packed with histamine

A molecule of hemoglobin ________.

• is shaped like a biconcave disk packed almost entirely with iron

• contains four glycoprotein units studded with oxygen

• consists of four globin proteins, each bound to a molecule of heme

• can carry up to 120 molecules of oxygen

The process by which leukocytes squeeze through adjacent cells in a blood vessel wall is called ________.

• leukocytosis

• positive chemotaxis

• emigration

• cytoplasmic extending

The process in which antibodies attach to antigens, causing the formation of masses of linked cells, is called ________.

• sensitization

• coagulation

• agglutination

• hemolysis

Which of the following statements about mature, circulating erythrocytes is true?

• They have no nucleus.

• They are packed with mitochondria.

• They survive for an average of 4 days.

• All of the above

Which of the following statements about erythropoietin is true?

• It facilitates the proliferation and differentiation of the erythrocyte lineage.

• It is a hormone produced by the thyroid gland.

• It is a hemopoietic growth factor that prompts lymphoid stem cells to leave the bone marrow.

• Both a and b are true.