Structure
The three types of muscle tissue
What are Skeletal, Cardiac, Smooth
What is a thick filament made of?
What is myosin
Must be present in order for a muscle to contract.
What is a nerve impulse?
What molecule is released by the motor neuron?
What is Acetylcholine.
What common disorder of the NMJ is caused by not having enough ions (electrolytes) for the muscle cell to relax following contraction?
What is cramping.
This muscle tissue is involuntary AND contains bifurcations and intercalated discs?
What is Cardiac Muscle
What is a thin filament made of?
What is actin?
Point of contact between a nerve ending and a muscle fiber.
What is neuromuscular junction?
What do we call the shortening of a muscle?
What is a Contraction?
What 2 events must occur to stop a muscle contraction?
Brain stops sending signal; calcium is pumped back into the sarcoplasmic reticulum
This type of muscle is involuntary and spindle shaped?
What is Smooth Muscle tissue
Which molecule causes myosin to bind to actin?
What is calcium?
Nerve that transmits impulse to muscle.
What is motor neuron?
Where is the calcium stored in a muscle cell?
What is the sarcoplasmic reticulum?
What autoimmune disorder is caused by antibodies attacking ACh receptors on the sarcolemma?
What is MG?
This is voluntary and striated.
What is Skeletal muscle tissue
These slide past each other which shorten the sarcomere.
What are actin and myosin?
End of the motor neuron
What is the axon terminal?
What must be present on the sarcolemma (muscle cell membrane) in order for a contraction to occur?
What is an acetylcholine receptor.
What would be the symptoms of a person who could not send nerve impulses to the muscle cell due to injury?
Paralysis
Skeletal muscle is attached to bones by _______.
What are tendons.
Both of these must be present for the sliding filament theory to occur.
What are Ca and ATP?
Space between the axon terminal and the sarcolemma (muscle cell membrane).
What is the synapse?
The electrical signal that a motor neuron sends causing the release of neurotransmitters is called a(n) __________ ______________.
What is an action potential.
What would be the outcome (symptoms) of a person who could not make Acetylcholine?
Death