chapter 10 muscle tissues

Similar to skeletal muscle cells all smooth muscle cells are excited by ACH

False

Ones genes have a greater impact than exercise habits in determining the proportion of fast twitch or slow twitch

True

Membranous network that wraps around myofibrils

Sarcoplasmic reticulum

Smooth muscle in which cells are individual sent signals

Multi unit

Process of glucose & glycolysis energy yield

2 atp

Increased age skeletal muscle show

Decrease in the number of myofibrils

Myofibril is made of myofilaments

True

Glycosis

Anaerobic process that occurs in the cytosol

Compared too slow twitch fast twitch respond to stimulus with less delay

True

Vascular supply to slow twitch muscles

Is more extensive then the around fast twitch muscles

Structure made to attach muscle to another muscle

Aponeneurosis

Muscle fibers from y shaped branches are joined by intercalated dics are

Cardiac

Muscle that Is passively stretched

Extensibility

Stair case warming up effect

Treppe

Embryonic cells that remain in skeletal muscle tissue are known as satellite cells

True

Fast twitch fibers generate less power then slow twitch

False

Wave summation is demonstrated by

Frequency

Typical skeletal muscle cells contains how many mitochondria

300

Smooth muscles tend to be shorter but thicker then skeletal muscles

False

Force of muscle contraction is

Recruiting different number of motor units

Iris of the eye contains what motor unit

Multi smooth unit

Skeletal muscle fibers in the body are

Fast twitch

Form of smooth muscle

Single unit / visceral

Sacromere depicts relaxed muscle -which identify the m line

4

Sacromere defined as the distance from to the next adjacent

Z disc

Resivors that store calcium

Terminal cisternae

Multiple nuclei muscle cells are a result from

Fusion of myoblasts

Power stroke

A myosin head pulling a thin filament toward the center of the Sacromere

The branch of nervous system helps govern smooth muscle contraction is the

Autonomic system

Neurons that stimulate muscle contraction are called what neurons

Motor

Return of a contracted muscle fiber to its restive length is an active energy process

False

In hierarchy of skeletal muscle the myofibril is made of myofilaments

True

Aerobic respiration involves oxidation of pyruvate

True

During skeletal muscle contraction more force is activated

False

Glycosis is a

Anaerobic process that occurs in cytosol

Smooth muscle tends to be shorter but thicker than skeletal

False

Because skeletal muscle cells are close together muscle contains very few blood vessels

False

For a sprint lasting 60 seconds atp is

Phosphate transfer and glycosis

Embryonic like cells that remain in adult skeletal muscle tissue are known as satellite cells

True

Skeletal muscle contains 1000’s of

Myofibrils

During REM sleep muscle tone decrease

True

Growth of uterus during pregnancy accomplished of its smooth muscle

Both hypertrophy & hyperplasia

For relaxation to occur

Sarcoplasm calcium levels fall , calcium is removed from troponin

A typical skeletal muscle contains how many mitochondria

300

Muscle tissue that allows impulse to travel down the entire length

Conductivity

Heavy breathing to compensate for oxygen

True

Prevalent of skeletal muscle fibers in the body are what fibers ?

Fast twitch

Myosin kinase catalyzes the transfer of p from creatine phosphate to ADP

False

When a skeletal muscle fiber is at rest there is more sodium outside the cell

True

Fibers form one motor unit

Are dispersed throughout most of the muscle

Reservoirs that store the calcium

Terminal cisternae

Calcium ions involved in skeletal muscle contraction

Troponin

Oxidative fibers

Red and fatigue resistant

Stair case effect ( warming up effect

Treppe

Deep fascia is known for muscular fascia

True

Describes change in muscle ( lack of exercise

Atrophy

Contraction phase of muscle twitch has shorter duration than relaxation phase

True

Contraction occurs when you try and to move a wall

Isotonic

Phosphate transfer

Immediate atp needs and is not dependent on oxygen

Has an active sites to which the heads of the thick filaments will bind

Actin

Which letter is associated with the light band

I

Type of muscle that has no Z discs single nucleus

Skeletal

Each thick filament contains how many protein molecules

200

Fat and connective tissue that encircle a beef steak form endomysium

False

Which are possible functions of skeletal muscles ?

A, b,c ,d, e (

Thin structure made of dense connective tissue that serves to attach a muscle to another muscle

Aponeurosis

Protein makes up filaments

Myosin

Invaginations of the muscle cell extend deep into the cell known as

T tubules

Release of cross bridges ( period of twitch )

Relaxation

Not a protein in thin filaments

Sarcomyosin

End plate potential is an event that involves gain of

Positive charge along the inside of the cell membrane as sodium rapidly enters

Increase in muscle tension

Recruitment

Myosin kinase catalyzes the transfer of Pi from creatine phosphate to ADP

False

Impulse arrives at the knob of the motor neuron calcium

Enters through a voltage gated channels and triggers the release transmitter

Heavy breathing to compensate for an oxygen debt

True

The sarcomere depicts relaxed muscle

A band

In a graph of wave summation the tension level returns to baseline between each peak

False

Muscles that are used for precisely controlled movements generally contain large motor units

False

During skeletal muscle fiber contraction the I band and H zones narrow

True

Which may occur as a result of muscle atrophy

All of the choice are correct

Reduction in muscle size

Fibers become weaker

Muscle loses tone

Fibers waste away and die

A letter with a zone of a relaxed muscle

H

Spring like property that returns muscle to its original length

Elasticity

The return of a contracted muscle fiber to its resting length i

False

The metabolic reactions within fast twitch fibers derive music of there energy

False

When a muscle relaxes

Cross bridges stop forming and muscle elasticity returns to the muscle to rest length

Increased phosphate ion is believed to contribute to fatigue

Phosphate release by myosin heads during cross bridge cycling

Correct order of connective tissue layers

Epimysium, perimysium, endomysium

B,c,a