Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
34 Cards in this Set
- Front
- Back
Endomysium |
Layer of connective tissue around a muscle fiber |
|
Fascicles |
Bundles of muscle fibers surrounded by a layer of connective tissue |
|
Perimysium |
The connective tissue sheath surrounding these bundles |
|
Epimysium |
Outer connective tissue sheaths surrounding a muscle |
|
Deep fascia |
Outer sheaths of connective tissue surrounding muscles and is continuous with hypodermis |
|
Endoneurium |
A layer of loose connective tissue around an axon that isolates it |
|
Fasicle |
Is a bundle of axons surrounded by connective tissue within a nerve |
|
Perineurium |
The connective tissue sheath surrounding these bundles |
|
Epineurium |
A thick layer of dense connective tissue around an entire nerve |
|
A muscle is also called a |
Myofiber |
|
Sarcolemma |
Plasma membrane |
|
T-tubule |
Extension if sarolemma into cell- transfer stimuli to sarcoplasmic reticulum |
|
Sarcoplasm |
Cytoplasm |
|
Sarcoplasmic Reticulum |
sarcoplasmic reticulum- stores and releases Ca 2+ ions |
|
Myofibril |
Basic unit of muscle contraction |
|
Myofilament |
Functional proteins if myofibril/sacromere |
|
Thick filaments |
Composed of myosin |
|
Thin filaments |
Composed of actin |
|
Largest to smallest |
Myofiber, myofibril, sarcomere, myofilament |
|
Sliding filament theory- concept on how muscle contracts; |
Proteins don't shorten during contraction. Actin is slid over myosin towards the center of sarcomere |
|
Actin |
Protein that slides to the center of saromere during contraction |
|
Myosin |
Protein that contains clubhead |
|
Crossbridge |
Unit of myosin + actin during contravtion |
|
Tropomyosin |
Blocks actions binding site for myosin |
|
Troponin |
Holds tropomyosin in place. It binds Ca 2+ ion |
|
Ca 2+ |
Serves as a key to unlock the action binding + permit contraction |
|
Neuromuscular junction |
Synapse between an axon and a single myofiber |
|
Synapase |
An interaction between an axon+ another neuron effector |
|
Synaptic bulb |
Fluid filled space between axon terminal+ myofiber |
|
Synaptic cleft |
Fluid filled space between axon terminal + myofiber |
|
Post Synaptic membrane |
Sarcolemma, with receptors to bind acethyleholine |
|
Neurotransmitter |
Chemical signal of the nervous system; required to cross synapse |
|
Isometric tension |
Increases during contraction, but length remains the same |
|
Isotonic |
Length changes during contraction, but tension remains the same |