What are contractile filaments? - ✔️✔️the basic contractile units of muscle; thick and thin filaments
What is contraction? - ✔️✔️the shortening of muscle which results in the generation of force and/or
movement
What is cross-bridge cycling (contraction relaxation cycle)? - ✔️✔️the sequence of events that occur at
the level of the thick and thin filaments resulting in the shortening of skeletal muscle and the generation
of force and/or movement
what is excitation-contraction coupling? - ✔️✔️the generation of an action potential in a skeletal muscle
fibre and subsequent increase in intracellular Ca2+ that initiates contraction
What is motor unit? - ✔️✔️a single alpha motor neuron and all the muscle fibres that it innervates
what is muscle fibre? - ✔️✔️one individual muscle cell
What is neuromuscular junction? - ✔️✔️the specialized synapse between an alpha motor neuron terminal
and individual muscle fibre
what is the primary function of all muscle's? - ✔️✔️to generate force and/or movement in response to a
physiological stimulus
What are some examples of some primary functions of muscles? - ✔️✔️- body movement
- maintenance of posture
- respiration
- production of body heat
- communication
- constriction of organs and vessels
, - heartbeat
what does the generation of force depend on in all muscle types? - ✔️✔️the conversion of chemical
energy (ATP)
what are striation caused by? - ✔️✔️do to arrangement of thick and thin filaments
what are some jobs of skeletal muscles? - ✔️✔️- respiration
- helps circulatory system
what is the stimulus source for skeletal muscles? - ✔️✔️somatic motor neurons
True or False. skeletal muscles are striated and uninucleated. - ✔️✔️- False
- they are striated and multinucleated
is the skeletal muscles primarily voluntary or involentary? - ✔️✔️voluntary
what is the stimulus for cardiac muscle? - ✔️✔️spontaneous electrical activity
is the cardiac muscle primarily involuntary or voluntary? - ✔️✔️involuntary
True or False. Cardiac muscle is striated and uninucleated. - ✔️✔️True
what can the cardiac muscle be altered by? - ✔️✔️autonomic NS, hormones
what are the stimulus for smooth muscle? - ✔️✔️- autonomic control
- spontaneous
- hormones
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