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59 terms

Muscle Tissues

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Smooth
This muscle tissue is the wall of hollow visceral organs such as stomach, urinary bladder, and respiratory passages.
Smooth
This muscle tissue's major function is to propel substances with the body in a definite pathway.
Smooth
This type of muscle tissue has no striations.
Smooth
What muscle tissue has slow, rhythmic contractions?
Peristalsis
Slow, rhythmic contractions that move substance through the body is also known as what?
Cardiac
This type of muscle tissue is the walls of the heart.
Cardiac
This type of muscle tissue's major function is to pump blood throughout the body.
Cardiac
This type of muscle tissue has striations of branching fibers and intercalated disk.
Cardiac
This type of muscle tissue has a medium speed of contraction.
Skeletal
This type of muscle tissue is attached to bones or sometimes skin.
Skeletal
This type of muscle tissue's major function is body movement.
Skeletal
This type of muscle tissue's major function is Maintaining posture.
Skeletal
This type of muscle tissue's major function is to stabilize joints.
Skeletal
This type of muscle tissue's major function is to generate heat.
Skeletal
This type of muscle tissue has rapid contractions with great force.
Sarcoplasm
Muscle cell cytoplasm.
Sarcolemma
Muscle cell membrane
Myofibril
Contractile organelles found in the sarcoplasm.
Sarcomere
The smallest muscle unit.
Sarcomere
What tiny contractile unit consist of dark and light bands?
Sarcomere
A chain of this contractile chain together to form a myofibril.
Myosin
This protein filament can split ATP.
Actin
This protein filament is the part in a sarcomere that moves.
Myosin
Which is darker myosin or actin?
Actin
Which is lighter myosin or actin?
Nerve Impulses
Skeletal muscle cells must be stimulated by _________ to contract.
Motor Unit
One motor neuron and the skeletal muscle cells it stimulates.
Acetylcholine
A Neurotransmitter released from the motor end plates of a motor neuron.
Acetylcholine
A Neurotransmitter that stimulates an action potential in a muscle.
Threshold
The amount of acetylcholine needed to make a muscle contract at a given time.
Cholinesterase
A Neurotransmitter released by the motor end plates that erase the effects of acetylcholine.
False
True or false, a muscle cell can contract partially if needed.
One
How many contractions will a single nerve impulse cause?
Latent Period
What is the period of time between stimulus and response.
Refractory Period
What is the time when muscle cannot respond to stimulus.
ATP
What energizes actin filaments?
Sarcoplasm
Calcium ions are normally stored in what part of the muscle?
Graded Responses
Different degrees of shortening of an entire muscle.
Twitch
A single, brief, jerky contraction from an isolated stimulus.
Summation
Frequent stimuli sum together and the contractions get stronger and smoother.
Incomplete Tetanus
More stimuli than summation with less chance for muscle relaxation.
Complete Tetanus
Rapid stimuli with no relaxation.
Contraction is smooth and sustained.
Tone
Continuous partial contraction.
ATP
Primary energy source for muscle contraction.
ATP
Each molecule contains 2 high energy phosphates.
Creatine Phosphate
Each molecule contains 1 high energy phosphate.
Glucose
This substance can provide a net gain of 36 phosphates.
Glucose
This energy source is third because it takes longer to use and required oxygen.
ATP
Muscles only store 4 -6 seconds of this substance.
Fatigue
Muscle fibers are tired and weakened.
Lactic Acid
As oxygen debt grows, what starts to accumulate in the muscle.
Isotonic
Muscle shortens and visible movement occurs.
Isometric
Actin can't move because muscle is against immovable object.
Aerobic
Exercises designed to increase blood flow to muscles and endurance.
Resistance
Exercises designed to increase muscle size.
Muscular Dystrophy
Muscle destroying disease that effects specific muscle groups.
Myasthenia Gravis
Destruction of acetylcholine receptors so that muscle cells don't stimulate properly.
Cramp
Painful involuntary contraction.
Tendonitis
Painful inflammation of a tendon often from overuse.