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Exam 3 - Chapter 9, Part One

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Quiz on Exam 3 - Chapter 9, Part One, created by Levi Chodorow on 19/03/2017.
Levi Chodorow
Quiz by Levi Chodorow, updated more than 1 year ago
Levi Chodorow
Created by Levi Chodorow over 8 years ago
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Question 1

Question
Which of the following is NOT considered one of the basic properties of muscle tissue?
Answer
  • excitability
  • elasticity
  • support
  • Contractility

Question 2

Question
The primary role of this type of muscle tissue is to push fluid and solids along the digestive tract and to perform varied functions in other systems.
Answer
  • Smooth muscle
  • Cardiac muscle
  • Skeletal muscle

Question 3

Question
The primary role of this type of muscle tissue is to push blood through arteries and veins in rhythmic contractions
Answer
  • Skeletal muscle
  • Cardiac muscle
  • Smooth muscle

Question 4

Question
Movement of skeletal muscles is an involuntary contraction
Answer
  • True
  • False

Question 5

Question
__________ muscles are contractile organs directly or indirectly attached to bones of the skeleton.
Answer
  • Skeletal muscle
  • Cardiac muscle
  • Smooth muscle

Question 6

Question
_____ is the ability to continue to contract over a range of resting lengths
Answer
  • Extensibility
  • Elasticity
  • Excitability
  • Contractility

Question 7

Question
The ability to respond to stimuli
Answer
  • Excitability
  • Responsibility
  • Reaction
  • stimulated

Question 8

Question
The ability to rebound toward its original length
Answer
  • Elasticity
  • Contractility
  • Stimulate
  • Flexion

Question 9

Question
Which of the following is/are considered function(s) of skeletal muscle? (Choose all that apply)
Answer
  • produce skeletal movement
  • Maintain posture and body position
  • Support soft tissue
  • regulate entering and exiting of material
  • control of the body and communication among its parts.

Question 10

Question
Is control over swallowing, defecation, and urination voluntary or involuntary?
Answer
  • Voluntary
  • Involuntary

Question 11

Question
Some of the energy used for contraction is converted to heat
Answer
  • True
  • False

Question 12

Question
dense tissue that contain connective tissue wrapped around each muscle fiber, which binds each fiber to its neighbor
Answer
  • Epimysium
  • Perimysium
  • Endomysium

Question 13

Question
dense tissue that divides the muscle into parallel compartments of fascicles (a bundle of structures)
Answer
  • Perimysium
  • Epimysium
  • Endomysium

Question 14

Question
dense tissue that surrounds individual muscle fibers
Answer
  • Endomysium
  • Perimysium
  • Epimysium

Question 15

Question
Nerves innervate the muscle by penetrating the _______
Answer
  • epimysium
  • Endomysium
  • Perimysium

Question 16

Question
There is a chemical communication between a nerve and a muscle The chemical is released into the _____
Answer
  • neuromuscular junction (aka, neuromuscular synapse)
  • Axon
  • Axon Terminal
  • Synaptic Cleft

Question 17

Question
• Blood vessels often parallel the nerves that innervate the muscle. • They then ______
Answer
  • branch to form coiled networks to accommodate flexion and extension of the muscle
  • dont do anything at all
  • branch to form coiled networks to push blood through arteries and veins
  • flood the body with neural activity

Question 18

Question
Membrane that surrounds the muscle cell
Answer
  • Sarcolemma
  • Sarcoplasm
  • Muscle fiber
  • myofilaments

Question 19

Question
The cytosol (the aqueous component of the cytoplasm of a cell) of the muscle cell
Answer
  • Sarcoplasm
  • Muscle fiber
  • Sarcolemma
  • myosatellite cells

Question 20

Question
______ is the same thing as muscle cell
Answer
  • Muscle fiber
  • Sarcoplasm
  • Sarcolemma
  • myosatellite cells

Question 21

Question
Where are nuclei of muscle fibers located?
Answer
  • just deep to the sarcolemma
  • in the sarcolemma
  • in the Sarcoplasm
  • just deep to the Sarcoplasm
  • the muscle fibers dont have nuclei

Question 22

Question
______ are responsible for the contraction of muscles
Answer
  • myofibrils
  • myofilaments
  • Muscle fibers
  • sarcomeres

Question 23

Question
______ are attached to the sarcolemma at each end of the muscle cell
Answer
  • myofibrils
  • myofilaments
  • sarcomeres
  • Muscle fibers

Question 24

Question
______ surrounds each myofibril
Answer
  • sarcoplasmic reticulum
  • epimysium
  • myosin
  • myofilaments

Question 25

Question
_____ are structures that consist primarily of the proteins actin and myosin
Answer
  • myofilaments
  • Cisternae
  • Sarcolemmas
  • Sarcomeres

Question 26

Question
______ are thin protein filaments in myofilaments
Answer
  • Actin
  • Myosin
  • titin
  • troponin

Question 27

Question
______ are thick protein filaments in myofilaments
Answer
  • Myosin
  • Actin
  • troponin
  • titin

Question 28

Question
All the myofilaments are arranged parallel to the long axis of the cell
Answer
  • True
  • False

Question 29

Question
______ are/is the main functioning unit of muscle fibers
Answer
  • Sarcomere
  • myofibrils
  • Muscle fibers
  • mybrofiber

Question 30

Question
_____ creates the striations that give the skeletal muscle its identifiable characteristic
Answer
  • overlapping actin and myosin (A Band)
  • separation of actin and myosin
  • the 10,000 myofibril per sarcomere
  • The Z Line (Z disc)

Question 31

Question
Within a sarcomere, the region between the A band and the Z line that contains of only thin filaments is the __________.
Answer
  • I band
  • M line
  • H band
  • zone of overlap

Question 32

Question
Overlapping _____ bands create striations
Answer
  • Z bands
  • I band
  • A band
  • H band
  • M line

Question 33

Question
_____ is a protein that covers the binding sites when the muscle is relaxed
Answer
  • Tropomyosin
  • Troponin
  • titin
  • nebulin

Question 34

Question
Know this picture . . . https://image.slidesharecdn.com/ch09lecturepresentation-140913123742-phpapp01/95/dr-b-ch-09lecturepresentation-15-638.jpg?cb=1410612013 Skeletal muscles consist of muscle fascicles • Muscle fascicles consist of muscle fibers • Muscle fibers consist of myofibrils • Myofibrils consist of sarcomeres • Sarcomeres consist of myofilaments • Myofilaments are made of actin and myosin
Image:
83e6493f-4a88-4ff3-8e78-df2a680930cd (image/jpeg)
Answer
  • ok
  • no

Question 35

Question
Which of the following statements regarding thick filaments is FALSE?
Answer
  • Myosin heads project toward the actin filaments
  • Adjacent thick filaments are interconnected by proteins of the H band.
  • Myosin filaments consist of an elongated tail and a globular head
  • A core of titin connects the Z lines

Question 36

Question
Which of these consists of Actin?
Answer
  • Thin Filaments
  • Thick Filaments

Question 37

Question
Which of these consists of Myosin?
Answer
  • Thin Filaments
  • Thick Filaments

Question 38

Question
A contracting muscle shortens in length
Answer
  • True
  • False

Question 39

Question
Contraction is caused by interactions between _______ and _______ within the sarcomere
Answer
  • thick and thin filaments
  • myofibrl and fascicle
  • epimysium and perimysium
  • I band and H band

Question 40

Question
Contraction is triggered by the presence of ______
Answer
  • calcium ions
  • phosphate ions
  • collagen fibers

Question 41

Question
Arrange the following from smallest structure to largest structure: (perhaps do it on a piece of paper): a. Muscle cell or muscle fiber b. Fascicle c. Myofilaments d. Whole skeletal muscle e. Myofibril
Answer
  • Myofilaments, Myofibril, Muscle cell or muscle fiber, Fascicle, Whole skeletal muscle
  • dont got it

Question 42

Question
According to the sliding filament theory when a muscle contracts, what happens?
Answer
  • The thick filaments slide past the thin filaments, and the sarcomere shotens.
  • The thin filaments slide past the thick filaments, and the sarcomere shortens.
  • actin filaments slide away from each other allowing the fibers in the muscle to contract

Question 43

Question
What controls muscle fibers?
Answer
  • motor unit
  • motor unit and motor neuron
  • motor neuron
  • muscles
  • None of the listed responses is correct.

Question 44

Question
Motor Units (Motor Neurons Controlling Muscle Fibers) have two types of control. The control over the eye muscles is an example of _________; meaning a ___________.
Answer
  • Precise control; motor neuron controlling two or three muscle fibers
  • less precise control; motor neuron controlling two or three muscle fibers
  • Precise control; A motor neuron controlling perhaps 2000 muscle fibers
  • less precise control; A motor neuron controlling perhaps 2000 muscle fibers

Question 45

Question
__________ refers to the condition in which muscles of the body remain semi-contracted for an extended period
Answer
  • Muscle tension
  • Muscle contraction
  • Muscle retraction

Question 46

Question
Muscle tension depends on (choose all that apply)
Answer
  • The frequency of stimulation
  • The number of motor units involved

Question 47

Question
A ______ is a motor neuron controlling Muscle Fibers
Answer
  • Motor Units
  • muscle fascicles
  • motor neurons
  • neural pathway

Question 48

Question
______ is the tension of a muscle when it is relaxed
Answer
  • Muscle Tone
  • Muscle Control
  • Muscle Contraction
  • Resting Muscle

Question 49

Question
_______ stabilizes the position of bones and joints. An example would be the amount of muscle involvement that results in normal body posture
Answer
  • Resting Muscle
  • Muscle Contraction
  • Muscle Tone
  • Muscle Control

Question 50

Question
_______ are specialized muscle cells that are monitored by sensory nerves to control muscle tone
Answer
  • Muscle Spindles
  • Muscle Fibers
  • red fibers
  • white fiber

Question 51

Question
Enlargement of the muscle is known as _______
Answer
  • Muscle Hypertrophy
  • Muscle Atrophy
  • Myopathies

Question 52

Question
Exercise causes (choose all that apply)
Answer
  • An increase in the number of mitochondria
  • An increase in the activity of muscle spindles
  • An increase in the concentration of glycolytic enzymes
  • An increase in the glycogen reserves
  • An increase in the number of myofibrils

Question 53

Question
______ is the discontinued use of a muscle
Answer
  • Muscle Atrophy
  • Muscle Hypertrophy
  • Myopathies

Question 54

Question
What is muscle tone?
Answer
  • the reduction in muscle size, tone, and power
  • the resting tension of skeletal muscles
  • a single contraction
  • muscle recruitment

Question 55

Question
the study of, Myofibrils, Myofilaments, Sarcomeres is _______
Answer
  • Microscopic anatomy
  • Gross anatomy

Question 56

Question
Myofibrils are bundles of myofilaments (protein filaments).
Answer
  • True
  • False

Question 57

Question
Humans rely on muscles for:
Answer
  • Many of our physiological processes
  • Virtually all our dynamic interactions with the environment
  • Stores minerals needed by blood cells.
  • Oxen-agates the body

Question 58

Question
Epimysium, perimysium, and endomysium converge to form ______. (Read them all)
Answer
  • tendons
  • connective tissue
  • Aponeuroses
  • All of these (they're the same thing - tends = bundle, aponeuroses = sheet)

Question 59

Question
Myosin (thick filament) and Actin are arranged in repeating units called _______
Answer
  • sarcomeres
  • tropomyosin
  • muscle waves
  • transverse tubules

Question 60

Question
Thin Filaments (Actin) Consists of twisted filaments of F actin strands and G actin globular molecules. Which of these consists of an active site (binding site)
Answer
  • G actin molecules
  • F actin strand

Question 61

Question
One sarcomere can defined as _____ line to _____ line
Answer
  • z to z
  • a to a
  • h to h
  • b to b

Question 62

Question
This is a picture of a portion of a sarcomere. What bank is represented by the red on the bottom. This is a stack of Actin and Z line.
Image:
0717679d-220b-4b17-93ea-0bfd63888152 (image/png)
Answer
  • I band
  • Z line
  • B line
  • H line

Question 63

Question
In between the I bands is the ____ band. This is represented by the green in this picture.
Image:
b50cf2aa-4654-4c9b-83d7-97b45b1d87c5 (image/png)
Answer
  • A band
  • B band
  • Boy band
  • Z band

Question 64

Question
In this picture the orange is the H zone. In the H zone there is only myosin and it is therefore less dark than the rest of the A band where actin and myosin are stacked.
Image:
7e311da6-6b28-4e69-ae22-f7c6fa1f5749 (image/png)
Answer
  • True
  • False

Question 65

Question
Muscle fiber also contains an abundance of WHAT, a starchlike carbohydrate that provides energy for the cell during heightened levels of exercise.
Answer
  • glycogen
  • calcium
  • calcium phosphate
  • cytosol

Question 66

Question
Part of actin filaments. A thin filament also has molecules of protein called WHAT (an elongated protein winds along the groove of the F actin).
Answer
  • Tropomyosin
  • Troponin
  • titin
  • myoblast

Question 67

Question
Each tropomyosin molecule has a smaller calcium-binding protein called WHAT bound to it. Holds tropomyosin in position
Answer
  • titin
  • myoblast
  • troponin
  • myosin

Question 68

Question
a light band; from Z disks to ends of thick filaments
Answer
  • I band
  • h band
  • a band
  • z band

Question 69

Question
n the middle of the A band, there is a lighter region called the WHAT, into which the thin filaments do not reach.
Answer
  • H band
  • B band
  • z band
  • I band

Question 70

Question
The thick filaments originate at a dark WHAT in the middle of the H band.
Answer
  • M Line
  • Z line
  • K line
  • S line

Question 71

Question
Each light I band is bisected by a dark narrow WHAT which provides anchorage for the thin filaments
Answer
  • Z disk
  • M line
  • H band
  • I band

Question 72

Question
Each segment of a myofilament from one Z disc to the next is called a WHAT
Answer
  • muscle fiber
  • myofibril
  • sarcomere

Question 73

Question
Myofilaments are made of actin and myosin
Answer
  • True
  • False

Question 74

Question
Study of Perimysium, Endmysim and epimysium
Answer
  • gross
  • microscopic
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