Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
chapter 6
| Term | Definition |
|---|---|
| contractility | the ability to shorten with force |
| excitability | the capacity to respond to stimuli |
| extensibility | the ability to be stretched |
| epimysium | a connective tissue sheath surrounding each skeletal muscle |
| fascia | a connective tissue separating each muscle from another |
| perimysium | loose connective tissue surrounding the fascicle |
| fiber | single muscle cell |
| endomysium | connective tissue sheath surrounding each fiber |
| myofibrils | cytoplasm of each fiber |
| actin | thinner myofilaments |
| myosin | thicker myofilaments |
| sarcomeres | highly ordered units of myofilaments |
| z line | the attachment point for actin |
| banding | the arrangement of actin and myosin |
| synapse | the site where the axon branch connects into the muscle cell |
| synaptic cleft | the space between the presynaptic terminal and muscle cell |
| acetylcholine | neurotransmitter secreted from the synaptic vesicle |
| acetylcholinesterase | the enzyme that breaks down acetylcholine in the muscle cell |
| threshold | the point at which a muscle will react to a stimuli |
| lag phase | the time between the application of the stimulus and the beginning of the contraction |
| contraction phase | the time of contraction |
| relaxation phase | the time during which the muscle relaxes |
| tetany | where the muscle remains contracted without relaxing |
| anaerobic respiration | without oxygen |
| aerobic respiration | with oxygen |
| muscle fatigue | when ATP is used during contraction faster than it can be produced |
| origin | the most stationary end of the muscle |
| insertion | the end of the muscle undergoing the greatest movement |
| belly | portion of the muscle between the origin and the insertion |
| synergists | muscles that woek together to accomplish a specific movements |
| antagonists | muscles that work in oppisition of each other |
| intrinsic | tongue muscle that change the shape of the tongue |
| extrinsic | tongue muscle that moves the tongue |
| sternocleidomastoid | rotates to head |
| frontalis | raises the eyebrows |
| masster | chewing |
| depressor anguli oris | frowning |
| levator labil superoris | sneering |
| zygomaticus | smiling |
| kissing muscles | buccinator & orbicularis oris |
| orbicularis oculi | colses eyelids |
| atp | energy for muscle contraction |
| adp | degenerated atp |
| prime mover | a muscle that palys a major role in a group of synergist |
Created by:
thyhunter
Popular Anatomy sets