What is an isometric contraction?

When muscle stays the same size

When muscle shortens or lengthens

Which one of the following is a key characteristic of slow twitch muscle fibers?

They contain large amounts of Mitochondria

They contain low numbers of Mitochondria

Which one of the following is a key characteristic of Fast Twitch B muscle fibers?

They contract rapidly with great force but fatigue fast (as they use creatine phosphate pathway)

They are Red in color, meaning they contain a lot of mitochondria

They are recruited for long duration activities

They contain high numbers of Mitochondria

Which statement about a tetanus is false?

It is caused by allowing the muscle to relax too many times between contractions.

It is a maximum sustained contraction

It is caused by stimulating contraction before a muscle has time to relax

It remains contracted until the muscle fatigues

A motor unit is made up of _______________.

a motor neuron and the muscle fibers it innervates

all the muscle fibers within a given muscle

all the neurons going into an individual section of the body

Number 3 represents which of the following events

ACh crossing the synaptic cleft

action potential reaches the axon terminal

sodium rushes into the muscle fiber

potassium leaving the muscle fiber

Which one of the following is a key characteristic of slow twitch muscle fibers?

They contain large amounts of Mitochondria

They contain low numbers of Mitochondria

A motor unit is made up of _______________.

a motor neuron and the muscle fibers it innervates

all the muscle fibers within a given muscle

all the neurons going into an individual section of the body

What is listed from smallest to largest correctly?

Sarcomere, myofibril, muscle fiber

Sarcomere, fascicle, muscle fiber

Muscle Physiology Test

Quiz

•

Biology

•

10th - 12th Grade

•

Practice Problem

•

Medium

•

NGSS

HS-LS2-3, HS-LS1-7, HS-LS1-2

Standards-aligned

Used 76+ times

FREE Resource

76 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which is NOT a function of the muscular system?

Generating Heat

Cleaning out toxins

Maintaining Posture

Dilating and constricting the pupil

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Thick filaments are also know as:

Actin

Myosin

Troponin

Tropmyosin

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Fast Twitch fibers are usually which color?

Red

White

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Can muscle contractions occur without the prescence of oxygen?

No

Yes

What is a segment of a myofibril and one contractile unit called?

Sarcomere

Myofilament

Muscle Fiber

Fasicle

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The I-band consists of:

Actin

Myosin

Actin + Myosin

Nothing

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the boundary of the sarcomere?

H Zone

M Line

I Band

Z Line

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Muscle Physiology Test

76 questions

Which is NOT a function of the muscular system?

Thick filaments are also know as:

Fast Twitch fibers are usually which color?

Can muscle contractions occur without the prescence of oxygen?

What is a segment of a myofibril and one contractile unit called?

The I-band consists of:

What is the boundary of the sarcomere?

Out of the three ways to make ATP, which method uses oxygen to create 36 ATP/1 Glucose

Out of the three ways to make ATP, which method does not use oxygen and only creates 2 ATP/1 Glucose

What is an isometric contraction?

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