vocab
the study of muscles
myology
during depolarization, what does sodium do?
Rushes into the cell
stand normally, then bring arms up to make a "T"
Abduction
thin filaments
actin
muscle of the heart
cardiac muscle
epimysium
During depolarization, what does potassium do?
does not change drastically
You stand like a T and bring your arms down at your side
Adduction
thick filaments
myosin
muscle of vessels and visceral organs
smooth muscle
fibrous connective tissue surrounding fascicles
during repolarization, what does sodium do?
does not drastically change
Doing a bicep curl
flexion
A membrane potential of 0mV means which of the following?
They are equal
muscle of movement
skeletal muscle
stripes formed from repeating series of dark and light bands along length
striations
during repolarization, what does potassium do?
rushes out of the cell
It defuses across the cell membrane resulting in depolarization.
sodium
The final chemical messenger. It allows tropomyosin to change shape
calcium
what causes striations on muscles
actin and myosin arrangement
continuous with sarcolemma, allow electrical nerve transmission to reach deep into muscle
acetylcholine binds to a receptor, which allows sodium to enter. what type of channel is this?
chemically gated
Activates synaptic vesicles in axon terminals to undergo exocytosis
calcium
which of the following proteins would be associated with excitability?
Acetylcholine receptors
has striations, fast response time, and is involuntary.
cardiac