Basic Structure
organ
Shivering is defined as rapid contractions of a muscle to produce this.
heat
Muscle cells have lots of this organelle to provide large amounts of energy needed for contration
mitochondria
These structure are like sacs that contain a neurotransmitter
synaptic vessicles
Latin prefix that means "muscle"
myo
Muscle fibers are bundled together to form structures called:
Fascicles
blood
myosin
The folded part of the sarcolemma that receives messages from nerve cells
motor end plate
Greek prefix that means "flesh". We use it to refer to muscles
sarco
This connective tissue membrane surrounds a fascicle.
Perimysium
Smooth muscles in the intestines are responsible for this function of the muscular system.
movement of food through the digestive tract
This filament creates the light bands seen under a microscope in skeletal muscle
actin
The gap between a motor neuron and a muscle cell.
Synaptic cleft
The border between two sarcomeres is known as this.
Z-line
This membrane of dense connective tissue surrounds an entire muscle (outside the epimysium) and tapers are the ends to form tendons.
Fascia
Some skeletal muscles remain contracted at all times to accomplish this function of the skeletal system
This modified organelle is long and stringlike
myofibril
Acetylcholine (ACH)
Sarcomere
The shape of a skeletal muscle cell
long and string-like
Muscles in the thigh support the knee, achieving this function of the muscular system
joint stability
sarcoplasm
Type of nerve cell that communicates with muscle cells.
motor neuron
A web-like transport system within a muscle cell.
Sarcoplasmic reticulum