UNIT 3 Exam

Last updated almost 5 years ago

25 questions

1

3

4

1

2

1

3

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UNIT 3 Exam

Last updated almost 5 years ago

25 questions

1

3

Draggable item		Corresponding Item

4

1

2

1

3

Explain what is happening in image 3 in as much detail as possible.

3

Name the event happening in image 2 and describe this event in as much detail as possible.

3

Describe what occurs to free the actin binding sites. Use the image below to help you and describe in as much detail as possible.

You have finished semester 1 of Anatomy and Physiology! Way to go! I hope you and your family have a wonderful break and stay healthy. All of your positive attitudes and commitments to working hard inspired and motivated me this semester. Thanks for all the effort and time you put into this class, and for being such great individuals!! Looking forward to semester 2 full of new turns and adventures. Together, we've got this! Now go get your eyes some rest from staring at this screen! See you in January, - Ms. Lifsitz 

Contracting units of a muscle made up of actin and myosin, that extend from Z-line to Z-line.

Fascia tapers off at the ends of skeletal muscles to form the___ which connects the skeletal muscle to a bone.

Perimysium 

Endomysium 

Tendon

Ligament

Match each connective tissue to the muscle tissue structure it surrounds.

Draggable item		Corresponding Item
Perimysium		Muscle Fiber
Endomysium		Entire Muscle
Epimysium		Fascicle

Put the following in the correct order to correctly describe the events that happen directly after the signal reaches the motor neuron?

Acetylcholine triggers the motor end plate.
An impulse is sent through the sarcoplasmic reticulum.
An impulse is sent through the T-Tubules.
The action potential reaches the axon terminal.

Which of the following statements is true? Use the image to help you!

A motor neuron can attach to MANY muscle fibers.

A muscle fiber can attach to MANY motor neurons.

Each muscle fiber has MANY motor end plates.

A motor neuron can only attach to ONE muscle fiber.

Precise movements, like those of the fingers, would be performed by which motor unit?

B

C

A

The gap between the motor neuron and the muscle fiber it supplies at the neuromuscular junction is called the .....

The motor end plate is labeled by number

In the myofibril cross section shown below, letter C labels __________ .

In the myofibril cross section shown below, letter B labels __________ .

Which image shows skeletal muscle tissue?

1

2

3

Which of the following occurs during muscle relaxation?

Actin binding sites are freed. 

Calcium is pumped into the sarcoplasmic reticulum

T-tubules stimulate the sarcoplasmic reticulum

Acetylcholine crosses the synaptic cleft

You have been wall sitting for one minute now, you feel a burning sensation in your legs because...

Lactic acid is building up

Your muscles don't have enough calcium

More ATP than normal is being made

You are eating too little protein

You fell skiing and broke your right leg 6 months ago. Today your cast comes off and your calf muscle is small?!

atrophy

hypertrophy

You just finished a whole month of weight lifting to train for your spring sport. Your mom comments on how toned and large your muscles look. This enlargement of your muscles is due too.....

The number of muscle fibers increasing in your leg muscles.

The endomysium of your leg muscles thickening.

More mitochondria now being in your leg muscles,

The number of actin and myosin strands in your leg muscles increasing.

A bicep curl, while in motion of moving the weight toward your shoulder, is an eccentric contraction of your and a concentric contraction of your .

bicep, tricep

tricep, bicep 

You plank for five minutes beating your four minute record. Abs of STEEL! You performed what type of contraction?

Isometric

Isotonic

Isocentric 

Explain what is happening in image 3 in as much detail as possible.

Name the event happening in image 2 and describe this event in as much detail as possible.

Describe what occurs to free the actin binding sites. Use the image below to help you and describe in as much detail as possible.

You have finished semester 1 of Anatomy and Physiology! Way to go! I hope you and your family have a wonderful break and stay healthy. All of your positive attitudes and commitments to working hard inspired and motivated me this semester. Thanks for all the effort and time you put into this class, and for being such great individuals!! Looking forward to semester 2 full of new turns and adventures. Together, we've got this! Now go get your eyes some rest from staring at this screen! See you in January, - Ms. Lifsitz 

Contracting units of a muscle made up of actin and myosin, that extend from Z-line to Z-line. 

Myofibril

Actin

Myosin

Z- Line

Sarcomere

T-Tubules

Sarcoplasmic Reticulum 

Sarcoplasm

Sarcolemma

Nuclei

Fascia tapers off at the ends of skeletal muscles to form the___ which connects the skeletal muscle to a bone.

Perimysium 

Endomysium 

Tendon

Ligament

The thinner of the two filaments that are large enough to see here is called....

Myosin

Troponin

Tropomyosin

Actin

Hint: bundle of muscle fibers

Match each connective tissue to the muscle tissue structure it surrounds. 

Perimysium

Muscle Fiber

Endomysium

Entire Muscle

Epimysium

Fascicle

Put the following in the correct order to correctly describe the events that happen directly after the signal reaches the motor neuron? 

Acetylcholine triggers the motor end plate.  

An impulse is sent through the sarcoplasmic reticulum. 

An impulse is sent through the T-Tubules.

The action potential reaches the axon terminal. 

Which of the following statements is true? Use the image to help you!

A motor neuron can attach to MANY muscle fibers.

A muscle fiber can attach to MANY motor neurons.

Each muscle fiber has MANY motor end plates.

A motor neuron can only attach to ONE muscle fiber.

Precise movements, like those of the fingers, would be performed by which motor unit? 

B

C

A

The gap between the motor neuron and the muscle fiber it supplies at the neuromuscular junction is called the ..... 

actin

"the gap"

synaptic cleft

sarcolemma

acetylcholine 

vessicle

motor end plate

The motor end plate is labeled by number

1

2

3

4

5

In the myofibril cross section shown below, letter C labels __________ .

Z-line

a sarcomere

sarcoplasm

myofibril 

H zone

actin

myosin

In the myofibril cross section shown below, letter B labels __________ .

actin

Z-line

myosin

H zone

a sarcomere

myofibril 

sarcoplasm

Which image shows skeletal muscle tissue? 

1

2

3

Which of the following occurs during muscle relaxation? 

Actin binding sites are freed. 

Calcium is pumped into the sarcoplasmic reticulum

T-tubules stimulate the sarcoplasmic reticulum

Acetylcholine crosses the synaptic cleft

You have been wall sitting for one minute now, you feel a burning sensation in your legs because...

Lactic acid is building up

Your muscles don't have enough calcium

More ATP than normal is being made

You are eating too little protein

You fell skiing and broke your right leg 6 months ago. Today your cast comes off and your calf muscle is small?!

atrophy

hypertrophy

You just finished a whole month of weight lifting to train for your spring sport. Your mom comments on how toned and large your muscles look. This enlargement of your muscles is due too.....

The number of muscle fibers increasing in your leg muscles.

The endomysium of your leg muscles thickening.

More mitochondria now being in your leg muscles,

The number of actin and myosin strands in your leg muscles increasing.

A bicep curl, while in motion of moving the weight toward your shoulder, is an eccentric contraction of your____________ and a concentric contraction of your ____________. 

bicep, tricep

tricep, bicep 

You plank for five minutes beating your four minute record. Abs of STEEL! You performed what type of contraction? 

Isometric

Isotonic

Isocentric 

Muscle fiber

Fascicle

T-Tubules

Blood Vessels

Sarcoplasmic Reticulum

Sarcomere

Nuclei

Myofibril

Z-line

Actin 

Sarcolemma

Sarcoplasm

Myosin

Sarcomere

Sarcoplasm

Muscle fiber

Sarcoplasmic Reticulum

Myosin

Nuclei

Sarcolemma

Fascicle

Blood Vessels

Z-line

Myofibril

T-Tubules

Actin 

Nuclei

Sarcoplasm

Sarcomere

Blood Vessels

Sarcolemma

Actin 

Muscle fiber

Sarcoplasmic Reticulum

Myosin

Myofibril

Z-line

T-Tubules

Fascicle

The thinner of the two filaments that are large enough to see here is called....

Myosin

Troponin

Tropomyosin

Actin

Hint: bundle of muscle fibers

Perimysium

Epimysium

Blood Vessels

Muscle Fiber

Tendon

Fascia

Endomysium

Fascicle