Chapter 9 Muscle Tissue Quiz

Muscles attach to bone by:

Tendons

Ligaments

Cartilage

The fascicle is covered by _______, which is then covered by ________ in the muscle.

Perimysium; epimysium

Epimysium; perimysium

The fascicle from outside to inside: _______ covers the fascicle, then a layer of __________ which houses the _____ ________.

Perimysium; epimysium; muscle cell

Epimysium; perimysium; muscle cell

Muscle cell; perimysium; epimysium

What are the organizational levels of the skeletal muscle?

Muscle; muscle cell; myofilaments; myofibril

Myofilaments; myofibrils; muscle cell; fascicle; muscle

None of the options

Levels of -mysium from outer to inner?

Endomysium, perimysium, epimysium

Epimysium, perimysium, endomysium

Perimysium, endomysium, epimysium

The ____ is one small part of the myofibril?

Epimysium

Muscle cell

Cytosol

Sarcomere

Muscle cells at rest are more ________ inside than outside .

Positive

Negative

Changing membrane potential requires what?

Action potential

Muscle contraction

Calcium ions

Myosin head

What are the four elements that are Hi/Lo inside and outside the cell?

Cl, K, H20, F

Na, Cl, K, Ca

Ca, Cl, H20, K

How can the cell become positive inside?

Move positive ions through the membrane and into the cell

Move negative ions through the membrane and into the cell

Ions can't go through the lipid membrane, so what do the ions do to get inside?

They don't go inside, only outside

They wait for the cell to die

They create channels/holes

They can if they are accompanied by calcium ions

What has the same concentration of ions as the extracellular fluid?

Blood

Sarcomere

Action potential

When a large number of muscle fibers are activated at once is called?

Spatial summation

Temporal summation

Sarcomere summation

When the muscle has a high level of stimulation this is called?

Temporal summation

Spatial summation

Sarcomere summation

Other than spatial and temporal summation, what are the other 2 ways to increase the force of contraction?

Which two ways of increasing the force of contraction are labeled as "try harder"?

Spatial and temporal summation

Temporal and sarcomere summation

Spatial summation and blood

A motor neuron and all the muscle cells it stimulates is called a ?

Sarcomere

Endoplasm

Motor unit

Fascicle

When myosin heads create force and shortens the muscle ?

Isotonic contraction

Isometric contraction

When myosin heads create force but does not shorten the muscle?

Isotonic contraction

Isometric contraction

What are the striations of the muscle called?

Striations

Thick and thin filaments

Long and short filaments

Thick filaments are full of _______ ?

Actin

Myosin

Calcium ions

Action potential

Thin filaments are full of _______ ?

Actin

Myosin

Calcium ions

Action potential

Long term activity (hours) is called _______ and short term activity (1 minute) is called ______.

Anaerobic; aerobic

Aerobic; anaerobic

What are the 3 steps of enzyme reactions?

1)direct phosphorylation, 2) glycolysis, 3) oxidative phosphorylation

1)oxidative phosphorylation, 2) glycolysis, 3) direct phosphorylation

Which colored muscle cells have lots of myoglobin molecules, mitochondria, and more blood vessels?

White muscle cells

Dark muscle cells

Which colored muscle cells have few myoglobin, few mitochondria, lots of glycogen, and lots of creatine phosphate?

White muscle cells

Dark muscle cells

Legs have a higher proportion of ________ that make ATP aerobic?

Dark muscle cells

White muscle cells

Arm muscles have a high proportion of _________ that make ATP anaerobic?

Dark muscle cells

White muscle cells

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Chapter 9 Muscle Tissue Quiz

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