integementary, infectious diseases Flashcards
name the 3 components of a cell
cytoplasm
nucleous
cell membrane
what does the nucleus contain>?
genetic info
DNA,RNA
what is mitosis
development of 2 identical daughter cells
gene expression means what?
being used
metaplasia definition:
adult cell is replaced by another cell
dysplasia:
cells mutate into other cells.. it is REVERSIBLE **
5 ways a cell can get injured:
physical agents chemical agents radiation biologic agents nutritional imbalances
apoptosis:
when a cell becomes injured and dies
why is the lymphatic system connected to the immune system?
helps identify pathogens
why do lymph nodes swell?
infection
full of pathogens and the immune cells are fighting them off
what is the largest lymphatic organ?
spleen
the size of a fist
where are the major lymph nodes located?
inguinal
cervical
axillary
what are the secondary lymphatic organs?
tonsils and spleen
what is the primary lymphatic organ
thymus
what are the 3 functions of the lymphatic system?
immunity
fluid balance
fat absorption
fluid enters the lymphatic vessels between the overlapping epithelial cells… T OR F
TTRUUUUEEE
lymphatic vessels are found in almost every tissue EXCEPT for bone marrow, cartilage and the CNS
fun fact
what does the lymphatic system consist of?
lymphatic vessels, organs, tissue and lymph (fluid)
whats another name for hypodermis
subcutaneous tissue
whats the muscle responsible for goosebumps
erector pili muscle
what does the integumentary system include?
skin, hair, nails, mucous membranes, glands
sebaceous glands produce less sebum making it difficult to retain moisture
FACT
what layer of skin gets thinner with age
subcutaneous fat layer
in elders how long can wounds take to heal
up to 4 more times