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Loren bio 9
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What is hydrostatic movement? What animals use it?
flatworms, annelids
They have longitude and circular muscles and they squeeze the water in them to propel forward
Whats the difference between compact vs. spongy bone?
Compact
: looks like there are no holes (but the osteons run throughout (haversion system) it's the functioning unit
Spongy
: interconnecting lattice structures (spicules) yellow (fat) red (blood) marrow.
Whats the difference between osteoblasts and osteoclasts?
Blasts
: build bones
Clasts
: destroy bone
What are the two ways bones are formed?
Endochondrial ossification
Intramembranous ossification
Define ossification
bone formation
What does endochondrial ossification do?
existing cartilage---->make bones
What does intramembranous ossification do?
mesenchymal(undifferentiated embryonic stuff)----->makes bone
Whats the axial skeleton?
main frame...skull, back, ribs
What connects bone to bone?
ligaments
what connects muscle to bone?
tendons
What do tendons connect?
muscle/bone
what do ligaments connect?
bone/bone
list the order in the muscles
1. muscles
2. muscle fibers
3. myofibrils
4. sarcomere
Whats the myofibrils covered in?
sarcoplasmic reticulum
What's the muscle cytoplasm called?
sarcoplasm
what's the muscle membrane called? What does it do?
sarcolemma
it makes action potential by the Tranverse Tubules (t system(
What are the two types of myofilaments?
actin
myosin
Whats the thin filament?
actin
Whats the thick filament
myosin
What zones on the muscle contracts?
HI!!!!!!
What zones on the muscle don't get smaller?
A (aye aye mateys)
What's the z line?
it anchors the thin filaments
Whats teh A zone?
the length of the thick filaments
Describe contraction....6 steps
action potential comes
sarcolemma
T system
Interior cell
Release of Ca+
contracts
What is Tonus?
partial contraction
What's the latent period?
time between stimulation and contraction.
What type of muscle has one centrally located nucleus?
smooth muscle (autonomic NS)
What is myoglobin?
like hemoglobin...(but it's a protein in muscles)
it grabs oxygen for the muscle.
What types of energy does the muscles rely on?
ATP
Creatine Phosphate/Arginine phosphate
Myoglobin
Author
thinkrussia
ID
154589
Card Set
Loren bio 9
Description
Loren bio 9 (muscles)
Updated
2012-05-18T13:22:31Z
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