Review Test Submission Exam 3 - Chapters 9 and 10 – PDF

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Summary

post lab...

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2/24/2021

Review Test Submission: Exam 3 - Chapters 9 and 10 – ...

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Week 4: 6/15 - 6/21

Jodyann Munroe

Review Test Submission: Exam 3 - Chapters 9 and 10

Review Test Submission: Exam 3 - Chapters 9 and 10 User

Jodyann Munroe

Course

BIOL 251-AW2 Human Anatomy & Physiology I Su20

Test

Exam 3 - Chapters 9 and 10

Started

6/15/20 12:00 PM

Submitted

6/15/20 1:25 PM

Status

Completed

Attempt Score

97 out of 120 points

Time Elapsed

1 hour, 25 minutes out of 2 hours

Instructions The test consists of 120 questions on the material from Chapters 9 and 10. You will have 120 minutes (2 hours) to complete the test. Once you start it, you must finish it in one sitting. Mak sure to submit your completed test if you finish it before the 120 minutes are up. If you have not finished the test after 120 minutes, it will be submitted automatically. The test will be available until 11:59 PM Tuesday June 16.

The timer will continue to run if you close the test window.

Results Displayed

All Answers, Submitted Answers, Correct Answers

Question 1

1 out of 1 points

The increase in muscle tension that is produced by increasing the number of active motor units is called Selected Answer:

recruitment.

Answers:

recruitment. complete tetanus. treppe. wave summation. incomplete tetanus.

Question 2

1 out of 1 points

The complex of a transverse tubule and two adjacent terminal cisternae is known as a https://bridgew.blackboard.com/webapps/assessment/review/review.jsp?attempt_id=_7160145_1&course_id=_69355_1&content_id=_2542182_1&o… 1/35

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Review Test Submission: Exam 3 - Chapters 9 and 10 – ...

Selected Answer:

triad.

Answers:

trisome. triad. trilogy. triptych. trimer.

Question 3

1 out of 1 points

The long strap-like muscle on the anterior thigh is the ________ muscle. Selected Answer:

sartorius

Answers:

sartorius iliotibial tract adductor longus rectus femoris gracilis

Question 4

0 out of 1 points

Many flexors of the hand and fingers are located in the _________ compartment of the forearm and have their origin on the _________. Selected Answer:

anterior; ulna

Answers:

anterior; humerus posterior; humerus anterior; ulna posterior; ulna anterior; radius posterior; radius

Question 5

1 out of 1 points

The fulcrum of a lever system is the Selected Answer:

joint.

Answers:

resistance. bone. muscle.

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Review Test Submission: Exam 3 - Chapters 9 and 10 – ...

load. joint.

Question 6

1 out of 1 points

Which of the following is not one of the forms of fascicle organization? Selected Answer:

perpendicular

Answers:

parallel circular convergent pennate perpendicular

Question 7

0 out of 1 points

___________ is the most important muscle involved in extension of the head. Selected Answer:

sternocleidomastoid

Answers:

sternocleidomastoid trapezius splenius platysma

Question 8

1 out of 1 points

Which muscle is the prime mover for extension of the leg at the knee? Selected Answer:

quadriceps

Answers:

tibialis anterior gluteus maximus soleus quadriceps hamstring muscles

Question 9

1 out of 1 points

___________ is located in the lateral compartment of the leg. https://bridgew.blackboard.com/webapps/assessment/review/review.jsp?attempt_id=_7160145_1&course_id=_69355_1&content_id=_2542182_1&o… 3/35

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Review Test Submission: Exam 3 - Chapters 9 and 10 – ...

Selected Answer:

fibularis longus

Answers:

soleus fibularis longus extensor digitorum longus gastrocnemius

Question 10

1 out of 1 points

What type of muscle assists an agonist by causing a like movement or by stabilizing a joint over which an agonist acts? Selected Answer:

a synergist

Answers:

a synergist an agonist a prime mover an antagonist

Question 11

0 out of 1 points

A muscle that plantarflexes the foot is the __________. Selected Answer:

tibialis anterior.

Answers:

extensor digitorum longus tibialis anterior. gastrocnemius. fibularis tertius.

Question 12

1 out of 1 points

Muscle tone is ________. Selected Answer:

a state of sustained partial contraction

Answers:

the feeling of well-being following exercise the condition of athletes after intensive training the ability of a muscle to efficiently cause skeletal movements a state of sustained partial contraction

Question 13

1 out of 1 points

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Review Test Submission: Exam 3 - Chapters 9 and 10 – ...

Extensor digitorum has its origin(s) on the _________. Selected Answer:

humerus

Answers:

radius ulna both the radius and the ulna humerus

Question 14

1 out of 1 points

Most skeletal muscles contain ________. Selected Answer:

a mixture of fiber types

Answers:

a mixture of fiber types a predominance of slow oxidative fibers muscle fibers of the same type a predominance of fast oxidative fibers

Question 15

1 out of 1 points

Which muscle is the agonist for sitting up? Selected Answer:

rectus abdominis

Answers:

rectus abdominis linea alba transversus abdominis external oblique

Question 16

1 out of 1 points

A single motor neuron together with all the muscle fibers it innervates is called a(n) Selected Answer:

motor unit.

Answers:

neuromuscular junction dermatome. myotome. end foot. end plate. motor unit.

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Question 17

0 out of 1 points

Which muscle cells have the greatest ability to regenerate? Selected Answer:

skeletal

Answers:

smooth skeletal cardiac no muscle can regenerate

Question 18

1 out of 1 points

Which of the following is true about smooth muscle? Selected Answer:

Certain smooth muscle cells can actually divide to increase their numbers.

Answers:

Certain smooth muscle cells can actually divide to increase their numbers. Smooth muscle cannot stretch as much as skeletal muscle. Smooth muscle, in contrast to skeletal muscle, cannot synthesize or secrete any connective tissue elements. Smooth muscle has well-developed T tubules at the site of invagination.

Question 19

1 out of 1 points

Myosin-binding sites (active sites) become exposed when calcium ions bind to Selected Answer:

troponin.

Answers:

myosin. troponin. actin. calcium channels. voltage-sensitive tubule proteins tropomyosin.

Question 20

1 out of 1 points

Cross bridge detachment is caused by binding of ________ to the myosin head. Selected Answer:

ATP

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Review Test Submission: Exam 3 - Chapters 9 and 10 – ...

Answers:

creatine phosphate creatine phosphate or ATP ATP calcium troponin acetylcholinesterase

Question 21

0 out of 1 points

Excitation-contraction coupling occurs during the _________ phase of a muscle twitch. Selected Answer:

contraction

Answers:

relaxation contraction latent synaptic delay

Question 22

1 out of 1 points

If a second stimulus arrives before the relaxation phase has ended, a second, more powerful contraction occurs. This addition of one twitch to another is called Selected Answer:

wave summation.

Answers:

treppe. incomplete tetanus. wave summation. complete tetanus. recruitment.

Question 23

1 out of 1 points

Muscular force can be adjusted to match different loads by Selected Answer:

All of the answers are correct.

Answers:

recruiting more motor units. recruiting larger motor units. involving more muscle fibers in the contraction. varying the frequency of action potentials in motor neurons All of the answers are correct.

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Review Test Submission: Exam 3 - Chapters 9 and 10 – ...

Question 24

1 out of 1 points

In a sarcomere, the central portion of thick filaments are linked laterally by proteins of the Selected Answer:

M line.

Answers:

Z line. A band. H band. M line. I band.

Question 25

1 out of 1 points

What structure in skeletal muscle cells functions in calcium storage? Selected Answer:

sarcoplasmic reticulum

Answers:

myofibrillar network sarcoplasmic reticulum intermediate filament network mitochondria

Question 26

1 out of 1 points

The ________ is the main chewing muscle. Selected Answer:

masseter

Answers:

buccinator masseter hyoglossus lateral pterygoid

Question 27

1 out of 1 points

A muscle that opposes, or reverses, a particular movement is a(n) ________. Selected Answer:

antagonist

Answers:

fixator agonist (prime mover) synergist

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antagonist

Question 28

0 out of 1 points

There are approximately ________ skeletal muscles in the human body. Selected Answer:

700

Answers:

600 400 700 500

Question 29

1 out of 1 points

Which of the following best describes the orbicularis oris? Selected Answer:

It closes, purses, and protrudes the lips.

Answers:

It closes the eye. It draws the eyebrows together. It pulls the lower lip down and back. It closes, purses, and protrudes the lips.

Question 30

1 out of 1 points

The _________ muscle is the most powerful muscle in the body. Selected Answer:

quadriceps femoris

Answers:

gluteus maximus latissimus dorsi hamstrings pectoralis major quadriceps femoris

Question 31

1 out of 1 points

Paralysis of which of the following muscles would make an individual unable to flex the knee? Selected Answer:

hamstring muscles

Answers:

brachioradialis

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soleus hamstring muscles gluteal muscles quadriceps

Question 32

1 out of 1 points

In a resting muscle cell, the level of ATP is higher than that of creatine phosphate. Selected Answer:

False

Answers:

True False

Question 33

1 out of 1 points

Although all the anatomical parts of muscle work together to give it its characteristics, which of the following proteins listed below would be most associated with the characteristics of extensibility? Selected Answer:

titin filaments

Answers:

myosin filaments potassium (K+) leak channels acetylcholine receptors in the motor end plate tropomyosin voltage-gated sodium (Na+) channels titin filaments

Question 34

1 out of 1 points

The ________ tightens the neck and draws the corners of the mouth downward as in expressing horror. Selected Answer:

platysma

Answers:

sternohyoid mentalis sternocleidomastoid platysma

Question 35

1 out of 1 points

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In an isotonic contraction, the muscle ________. Selected Answer:

changes in length and moves the "load"

Answers:

does not change in length but increases tension changes in length and moves the "load" never converts pyruvate to lactate rapidly resynthesizes creatine phosphate and ATP

Question 36

1 out of 1 points

________ is a powerful forearm extensor at the elbow joint. Selected Answer:

Triceps brachii

Answers:

Brachialis Triceps brachii Biceps brachii Brachioradialis

Question 37

1 out of 1 points

The adductor muscle group of the lower limb is located in the _________ compartment of the thigh. Selected Answer:

medial

Answers:

posterior lateral anterior medial

Question 38

0 out of 1 points

Which of the following muscles is NOT a rotator cuff muscle? Selected Answer:

subscapularis

Answers:

teres minor teres major supraspinatus infraspinatus subscapularis

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Question 39

0 out of 1 points

Put the following structures in order from superficial to deep. 1. muscle fiber 2. perimysium 3. myofibril 4. fascicle 5. endomysium 6. epimysium Selected Answer:

6, 2, 5, 4, 1, 3

Answers:

1, 3, 5, 6, 4, 2 2, 3, 1, 4, 6, 5 6, 2, 4, 5, 1, 3 1, 5, 4, 3, 2, 6 6, 2, 5, 4, 1, 3

Question 40

1 out of 1 points

Muscles can only pull; they never push. Selected Answer:

True

Answers:

True False

Question 41

1 out of 1 points

What is NOT a bone to which the sternocleidomastoid muscle is attached? Selected Answer:

mandible

Answers:

clavicle temporal bone mandible sternum

Question 42

0 out of 1 points

Which of the following statements is false? Selected Answer:

Skeletal muscle mass declines naturally after early adulthood

Answers:

Skeletal muscle mass declines naturally after early adulthood Cardiac muscle cells are interconnected by gap junctions Smooth muscle can be stimulated to contract by nerves or hormones

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Cardiac muscle has a striated appearance Bundles of smooth muscle cells have a perimysium

Question 43

1 out of 1 points

The origin(s) of the gastrocnemius muscle is the _________. Selected Answer:

femur

Answers:

both the tibia and the femur femur tibia both the tibia and the fibula

Question 44

1 out of 1 points

___________ is a major muscle involved in lateral rotation of the head. Selected Answer:

sternocleidomastoid

Answers:

trapezius platysma splenius sternocleidomastoid

Question 45

1 out of 1 points

After death, muscle fibers run out of ATP and calcium begins to leak from the sarcoplasmic reticulum into the sarcoplasm. This results in a condition known as Selected Answer:

rigor mortis.

Answers:

tetany. depolarization. oxygen debt. rigor mortis. treppe.

Question 46

1 out of 1 points

The molecular mechanism that explains how a muscle fiber contracts is called the ________ model. https://bridgew.blackboard.com/webapps/assessment/review/review.jsp?attempt_id=_7160145_1&course_id=_69355_1&content_id=_2542182_1&… 13/35

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Selected Answer:

sliding filament

Answers:

action-myosin interaction sliding filament excitation-contraction coupling neuromuscular muscle contraction

Question 47

0 out of 1 points

Which of the following statements is true? Selected Answer:

Cardiac muscle cells have many nuclei.

Answers:

Striated muscle cells are long and cylindrical with many nuclei. Smooth muscle cells have T tubules. Cardiac muscle cells are found in the heart and large blood vessels. Cardiac muscle cells have many nuclei.

Question 48

1 out of 1 points

All of the following proteins are part of the thin filaments except Selected Answer: Answers:

titin (elastic filament) tropomyosin. troponin. actin. titin (elastic filament) None of the answers is correct; all of the above proteins are part of thin filaments.

Question 49

0 out of 1 points

Muscles with fibers that run parallel to the long axis of the body are called Selected Answer:

obliquus.

Answers:

medialis. rectus. lateralis.

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obliquus. transversus.

Question 50

1 out of 1 points

What anchors thin and elastic filaments in place within the myofibri...