Terms and Definitions
Name of muscle cell
Muscle fiber
What ion is responsible for binding to regulatory proteins to trigger the binding of actin and myosin?
Calcium ions
type of muscle tissue that is attached to bone
Skeletal
A motor neuron and all the skeletal muscle cells it stimulates is a ____________________
motor unit
What is a fascicle?
bundle of muscle fibers
This is the neurotransmitter responsible for muscle contraction that begins from a nerve impulse
acetylcholine
This type of muscular tissue is found in the heart and is involuntary
Cardiac
In the arm, which muscle is the flexor and which muscle is the extensor?
Biceps: flexor
Triceps: extensor
In the action of flex the elbow, the biceps is the antagonist. True or false, and explain why.
False, the triceps would be the antagonist because it is the muscle that work against that action.
Which action would stimulate more muscle cells to contract?
writing on the test in Ms. Lee's class or swinging a golf club
swinging a golf club
This muscular tissue is involuntary and found in internal organs
Smooth
name the connective tissue in the muscle structure from most interior to exterior
endomysium, perimysium, and epimysium
Definition fast twitch and slow twitch.
Fast twitch: type of muscle with contracts quickly and fatigues quickly
Slow twitch: type of muscle will contract slowly and is fatigue resistant
The electrical charge produced in nerve or muscle fibers by stimulation, imbalance in cells is called ____________.
Action potential
Which of the following is NOT a type of muscle tissue?
a. connective
b. skeletal
c. smooth
d. cardiac
a. Connective
Term used to describe the binding connection between the heads of myosin and actin
Cross bridges
A term used to describe the link between an axon terminal of a neuron and a muscle fiber
neuromuscular junction
Name all three muscle tissues and one characteristic of each
Skeletal: voluntary, attach to bone, rapid contractions
Smooth: involuntary, walls of internal organs, slow contractions
Cardiac: involuntary, found in heart, steady, rhythmic contractions