Muscle Anatomy
The fine areolar tissue surrounding each muscle fiber
What is the endomysium
The thin filaments slide past thick filaments in the ......
What is the sliding filament model of contraction
This ion must first enter the axon terminal to stimulate the release of the neurotransmitter (acetylcholine)
What is calcium ions
This membrane surrounds an entire muscle
What is the epimysium
This property of muscle tissue gives it the ability to forcibly shorten.
What is contractility
A muscle cell's cytoplasm
What is sarcoplasm
An action potential travels across sarcolemma and stimulates the release of Calcium ions, and these calcium ions bind to the thin filaments initiating contraction. This process is known as....
What is excitation-contraction coupling
The space between the axon terminal and the sarcolemma
What is the synaptic cleft
This membrane surrounds individual fascicles of a muscle
What is the perimysium
This property of muscle tissue gives it the ability to receive and respond to stimuli
What is excitability
The region of a sarcomere with only thick filaments present
What is the H zone
These occur when myosin heads bind to actin
What are cross bridges
ACh binds to receptors on the sarcolemma, causing the passage of these into the cell
What are sodium ions
This type of muscle cell is found within the walls of hollow visceral organs.
What is smooth muscle
This property of muscle tissue gives it the ability to recoil and resume the original length following contraction.
What is elasticity
The two regulatory proteins bound to actin
What is troponin and tropomyosin
Internal calcium is released from these structures in muscle cells during the voltage stimulated process created by the action potential
What is sarcoplasmic reticulum
This process is initiated if an electrical threshold is reached within a nerve cell
What is an action potential
This type of muscle tissue is only found within one organ in the body
What is cardiac muscle tissue
The increase of individual muscle fiber size: increased mitchondria, myofilamentes, glycogen stores, and connective tissue. (The primary goal of strength training)
What is hypertrophy of muscle of cells
The large structural protein that holds thick filaments in place, helps recoil after stretch, and resists excessive stretching
What is titin (elastic filament)
When there is an influx of sodium ions into the cell decreasing membrane voltage (making it more positive). This process is known as...
What is depolarization
The functional group of a motor neuron and all muscle fibers it supplies
What is motor unit
This type of muscle tissue contracts rapidly, but tires easily.
What is skeletal muscle tissue?
This condition is caused by the flooding of calcium ions into the sarcolemma and a deficiency of ATP causing the cross bridges to stay formed.
What is rigor mortis