Muscle Tissues

59 terms by bcollett 

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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.

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