Exam 3 - Chapter 9, Part One

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Which of the following is NOT considered one of the basic properties of muscle tissue?

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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.

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The primary role of this type of muscle tissue is to push blood through arteries and veins in rhythmic contractions

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Movement of skeletal muscles is an involuntary contraction

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__________ muscles are contractile organs directly or indirectly attached to bones of the skeleton.

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_____ is the ability to continue to contract over a range of resting lengths

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The ability to respond to stimuli

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The ability to rebound toward its original length

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Which of the following is/are considered function(s) of skeletal muscle?
(Choose all that apply)

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Is control over swallowing, defecation, and urination voluntary or involuntary?

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Some of the energy used for contraction is converted to heat

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dense tissue that contain connective tissue wrapped around each muscle fiber, which binds each fiber to its neighbor

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dense tissue that divides the muscle into parallel compartments of fascicles (a bundle of structures)

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dense tissue that surrounds individual muscle fibers

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Nerves innervate the muscle by penetrating the _______

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There is a chemical communication between a nerve and a muscle
The chemical is released into the _____

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• Blood vessels often parallel the nerves that innervate the muscle.
• They then ______

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Membrane that surrounds the muscle cell

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The cytosol (the aqueous component of the cytoplasm of a cell) of the muscle cell

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______ is the same thing as muscle cell

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Where are nuclei of muscle fibers located?

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______ are responsible for the contraction of muscles

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______ are attached to the sarcolemma at each end of the muscle cell

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______ surrounds each myofibril

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_____ are structures that consist primarily of the proteins actin and myosin

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______ are thin protein filaments in myofilaments

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______ are thick protein filaments in myofilaments

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All the myofilaments are arranged parallel to the long axis of the cell

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______ are/is the main functioning unit of muscle fibers

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_____ creates the striations that give the skeletal muscle its identifiable characteristic

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Within a sarcomere, the region between the A band and the Z line that contains of only thin filaments is the __________.

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Overlapping _____ bands create striations

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_____ is a protein that covers the binding sites when the muscle is relaxed

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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

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Which of the following statements regarding thick filaments is FALSE?

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Which of these consists of Actin?

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Which of these consists of Myosin?

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A contracting muscle shortens in length

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Contraction is caused by interactions between _ and _ within the sarcomere

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Contraction is triggered by the presence of ______

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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

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According to the sliding filament theory when a muscle contracts, what happens?

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What controls muscle fibers?

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Motor Units (Motor Neurons Controlling Muscle Fibers) have two types of control.
The control over the eye muscles is an example of _; meaning a ___.

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__________ refers to the condition in which muscles of the body remain semi-contracted for an extended period

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Muscle tension depends on (choose all that apply)

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A ______ is a motor neuron controlling Muscle Fibers

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______ is the tension of a muscle when it is relaxed

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_______ stabilizes the position of bones and joints.
An example would be the amount of muscle involvement that results in normal body posture

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_______ are specialized muscle cells that are monitored by sensory nerves to control muscle tone

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Enlargement of the muscle is known as _______

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Exercise causes (choose all that apply)

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______ is the discontinued use of a muscle

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What is muscle tone?

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the study of, Myofibrils, Myofilaments, Sarcomeres is _______

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Myofibrils are bundles of myofilaments (protein filaments).

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Humans rely on muscles for:

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Epimysium, perimysium, and endomysium converge to form ______. (Read them all)

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Myosin (thick filament) and Actin are arranged in repeating units called _______

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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)

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One sarcomere can defined as _ line to _ line

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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.

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In between the I bands is the ____ band. This is represented by the green in this picture.

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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.

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Muscle fiber also contains an abundance of WHAT, a starchlike carbohydrate that provides energy for the cell during heightened levels of exercise.

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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).

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Each tropomyosin molecule has a smaller calcium-binding protein called WHAT bound to it.
Holds tropomyosin in position

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a light band; from Z disks to ends of thick filaments

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n the middle of the A band, there is a lighter region called the WHAT, into which the thin filaments do not reach.

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The thick filaments originate at a dark WHAT in the middle of the H band.

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Quiz on Exam 3 - Chapter 9, Part One, created by Levi Chodorow on 19/03/2017.

Exam 3 - Chapter 9, Part One

Exam 3 - Chapter 9, Part One

Which of the following is NOT considered one of the basic properties of muscle tissue?

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.

The primary role of this type of muscle tissue is to push blood through arteries and veins in rhythmic contractions

Movement of skeletal muscles is an involuntary contraction

__________ muscles are contractile organs directly or indirectly attached to bones of the skeleton.

_____ is the ability to continue to contract over a range of resting lengths

The ability to respond to stimuli

The ability to rebound toward its original length

Which of the following is/are considered function(s) of skeletal muscle? (Choose all that apply)

Is control over swallowing, defecation, and urination voluntary or involuntary?

Some of the energy used for contraction is converted to heat

dense tissue that contain connective tissue wrapped around each muscle fiber, which binds each fiber to its neighbor

dense tissue that divides the muscle into parallel compartments of fascicles (a bundle of structures)

dense tissue that surrounds individual muscle fibers

Nerves innervate the muscle by penetrating the _______

There is a chemical communication between a nerve and a muscle The chemical is released into the _____

• Blood vessels often parallel the nerves that innervate the muscle. • They then ______

Membrane that surrounds the muscle cell

The cytosol (the aqueous component of the cytoplasm of a cell) of the muscle cell

Which of the following is/are considered function(s) of skeletal muscle?
(Choose all that apply)

There is a chemical communication between a nerve and a muscle
The chemical is released into the _____

• Blood vessels often parallel the nerves that innervate the muscle.
• They then ______