Unit 6 lt 3

Question 1

Hemostasis

Answer 1

Process of stopping bleeding during an injury to a blood vessel

Question 2

Steps in hemostasis

Answer 2

Vascular spasm - contraction of smooth muscle in blood vessel

platelet plug - platelets gather at the site of the wound and bind together using collagen fibers

coagulation -
damaged tissues release a substance called PA

fibers catch blood cells and form long term clot

Question 3

Nonspecific immunity

Answer 3

Provides general protection

inflammatory response, tears, skin, mucous,

Question 4

Specific immunity

Answer 4

Involves memory and the ability to recognize and respond to certain harmful substances or bacteria (adaptive immunity)

natural - not deliberate and occurs because of everyday living

artificial - immunization and deliberate exposure

Question 5

Active

Answer 5

individuals own immune system responds to a harmful agent

Question 6

passive

Answer 6

when immunity has developed in someoe else and is transferred

Question 7

Antibodies

Answer 7

Protein compounds that bind to bacteria, viruses, etc to trigger an immune response

Question 8

antigens

Answer 8

protein ,molecules imbedded in the surface of invading or diseased cells