Integument & Immune Systems Flashcards
1
Q
integument
A
- provides a physical barrier to prevent the entrance of pathogens into the body
- composed of skin, hair, nails
2
Q
skin microbe
A
- aka skin flora
- microorganisms that live on the surface of the human ski, prevent other more harmful organisms from occupying the space
3
Q
skin
A
-sebaceous glands in the skin secrete oil on the skin to keep its pH acidic, which decreases bacterial growth
4
Q
sweat
A
- secreted form other glands and helps cool the skin
- contains enzymes that help destroy bacterial cell walls
5
Q
dermis
A
-contains blood supply to the skin and most of the specialized cells
6
Q
epidermis
A
-top layer, contains keratinocytes
7
Q
hair
A
- directs sweat and waste away from the skin
- sensory organ, allows detection of motion
8
Q
mucous
A
- help prevent foreign organisms from entering the body and resist infection
- secretions in the nose and eyes
9
Q
nails
A
-protect the tips of the fingers and toes from physical injury
10
Q
immune system
A
- plays a key role in destruction of internal pathogens
- recognizes antigens (foreign cells) and mounts a response against them
11
Q
inflammatory response
A
- nonspecific defense mechanism
- WBCs are activated and release chemicals (histamine) to activate the immune response
- this response dilates and increases permeability of blood vessels to ward off infection
12
Q
lymphatic system
A
- lymph flows through the lymphatic vessels from lymph node to lymph node
- lymph nodes and spleen: reservoirs of WBCs and filter lymph to remove antigens
13
Q
cell-mediated immunity
A
- contains a variety of WBCs (leukocytes), each with a specific function
- does not contain antibodies
14
Q
granulocytes
A
attracted to the site of injury, where they phagocytize antigens
15
Q
neutrophils
A
- most common granulocyte
- first responders to site of inflammation, attract WBCs
- main component of pus
