chpt1 1 Flashcards
Tissue
group of cells of the same type that have functional unity
what are the 4 types of tissue?
- Epithelial 2. connective 3. muscular 4.Nervous
epithelial tissue
-skin layers
-linings of cavities
-may secrete epithelium
-may be ciliated
connective tissue
-adipose (fat)
-dense fibrous : tendon, aponeurosis, ligament ,fascia
-cartilage
-bone
muscular tissue
-striated (voluntary, somatic)
-smooth (involuntary,autonomic)
-cardiac
visceral muscle
smooth muscle
-associated with involuntary functions
-glands, digestion organs
muscles
-made up of fibres
-fast twitch
-slow twitch
fast twitch fibers
-contract quickly
- fine movement
-fatigue easily
slow twitch fibres
- larger movements
-exert greater force - move slowly
- greater endurance
-antigravity muscles of trunk
Muscle function
-Only contract
-contractions brings two muscles together
-muscles w more fibre exert more force of contraction
4 critical definitions to muscles
- origin 2. insertion 3. agonist 4. antagonist
origin
point of attachment in muscle during contraction (immobile)
insertion
point of attachment of muscle during contraction mobile
agonist
(prime mover)
muscle that preforms intended action
antagonist
opposes intended action
pallategloses
moves both tongue soft palate
neurons
Transfer information
glial cells
-structural support
-nutrient transfer
-neurotransmitter
- blood-brain barrier
nervous system ( anatomical)
structure of the nervous system such as nuclei, cells ganglia
nervous system (functional)
motor control system, language system ,sensory systems
nervous system ( developmental)
embryonic devolpment
anatomical divisions of NS
-(system of controls)
2 components (cns) and (pns)
CNS
cerebral cortex
cerebellum
brainstem
spinal cord
PNS
- cranial nerves
- spinal nerves