Chapter 40 - protection, support, and movement Flashcards
(16 cards)
invertrable
cnidarians
epitheal cells
cnidocytes and epithlomusclualr
cnidocytes
distingusting features prevouily discussed
epithlomuscluar
cells and endothermal muscular cels
Plathelmmutus
epitheal cell
surface: cilia
rhadites cells
surface of plathmmutus
turbellaria
rhadites cells
produces mucos( protection and movement)
releases chemical making worm taste bad
trematodes and crestodes
epitheal cell
hold fast structure
* used to attach to host intestien
epithelium secreted cuticles in invertebes
Nematods
- non-hardening cuticle
- non-cellular, collagen, and cultin layer
characteristics of nematods
- thicker than epithelium
- doesn’t allow increase in diameter
- flexes longitivity ( side to side)
- considered an exoshlter
epithelium secreted cuticles in invertebes
earth worm
- non hardening
- collagen and carbohydrates
- flexible
- gelatine like
- no limits on movemnt and diameter
epithelium secreted cuticles in invertebes
Arthropods
- hardened cuticle(skell)
* chitin w/ mineras
* muscle attached to underlying larger
* secretes new exosketon
* new limbs are regenerated
epithelium secreted cuticles in invertebes
Mollusks
- external shell- pearls
- bivales; shells
syncytail epidermis: trematods and cestodes
fusion of eputhela cells from a common cytoplam on surface
* human heart muscle is syncytism
Human integratory system
- protection….
- physical
- pathogens
- from enviromental factors
- melanin
- secrets prevent polar avaent molecules and ionicmolecules form cross skin
- excretion- sweat
- temp regualtion- perspistation, blood vessel
- cutaneus senstation- stimuli
- pain, touch, vibration
- metabolic functions
* vit d production
* activate of tropical steroid s - blood reservous
vertebrate skin tissue layers an cells
empdermis, dermis,
Epidermis
- top dermsu
