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The different types of muscle tissue differ from each other by:
microscopic anatomy, location, type of control
The mitochondria in muscle fiber are arranged:
in rows throughout the muscle close to the myofibrils
This part of the skeletal muscle cell releases calcium when stimulated by the T tubules:
terminal cisterna of sarcoplasmic reticulum
The sarcoplasmic reticulum releases calcium ions into the cytosol:
at the beginning of a contraction
ATP is necessary for:
muscle contraction, relaxation, and calcium re-uptake by the sarcoplasmic reticulum
Excitability refers to the ability of a cell to:
respond to a stimulus by producing an electrical signal
Elasticity refers to the ability of a muscle fiber to:
return to original shape after contracting or stretching
Calcium ions move from the cytoplasm (sarcoplasm) into the sarcoplasmic reticulum because of the action of:
active transport pumps in the sarcoplasmic reticulum membrane
When calcium ion concentration in the sarcoplasm is low the:
troponin-myosin complex slides back over the myosin binding sites
The _______ is responsible for the striations of striated muscle.
alternating of A bands and I bands
Which of the following properties of muscle tissue is its ability to generate tension to do work?
Various connective tissue wrappings surround various parts of muscle tissue. From an individual fiber to the entire muscle, these are:
endomysium, epimysium, perimysium
The arrival of an action potential in a T tubule causes the opening of Ca+2 channels in the adjacent sarcoplasmic reticulum and the release of Ca+2 into the sarcoplasm.
The twitch contractions of some muscles (muscles of the eyeball) are more rapid and brief than other muscles (muscles of calf).
Due to the presence of superficial and deep fascia, the most-used tools in animal dissection are scalpels and scissors
Normally, flexing one's elbow requires some muscles on one side to use ATP to contract while other muscles on the other side use ATP to extend.
During rigor mortis the formation of numerous crossbridges are responsible for the resistance of muscle to passive movement (shortening and lengthening) by someone trying to reposition the body.
Hours of practice pays off in sport's activities by increasing the numbers of muscle cells in muscles that are in use.
Membrane has a high voltage potential able to transmit an action potential
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