Describe The Three Types Of Muscle Tissue And Their Characteristics Flashcards

1
Q

What is the Myofilaments in muscles responsible for?

A

These are responsible for the muscles ability to move or contract.

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2
Q

What does Myofilaments do?

A

This moves body parts.

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3
Q

How do Myofilaments contract?

A

They contract their elongated muscle fibres.

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4
Q

What are voluntary muscle tissues?

A

The skeletal muscle is a voluntary muscle tissue. As found in muscles that move by conscious thought.

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5
Q

What does skeletal muscle tissue connect too?

A

It attaches to bones and is composed of long thread like cells.

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6
Q

How do these cells/ muscles contract?

A

These cells contract when stimulated by nerve cells.

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7
Q

What can skeletal muscle tissue move?

A

They move the head, trunk, limbs allowing voluntary movement.

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8
Q

What other name can be given to skeletal muscle cells?

A

They are also known as muscle fibres.

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9
Q

What appearance do skeletal muscles take on?

A

They appear long, cylindrical and contain a peripherally located nuclei.

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10
Q

Can smooth muscle tissue be controlled consciously?

A

No. Smooth muscle tissue generally can not be controlled consciously.

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11
Q

What are smooth muscle tissues composed of?

A

Smooth muscles are composed of elongated spindle shaped cells.

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12
Q

How many nuclei does a smooth muscle cell have?

A

One nucleus.

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13
Q

What other names can be given to smooth muscle tissues?

A
  • nonstriated involuntary muscles

- unstriated muscles.

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14
Q

What occurs if a smooth muscle divides?

A

Smooth muscles can divide so the muscle can regenerate after injury.

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15
Q

Where are smooth muscle tissues used?

A

They are used in hollow internal organ walls.

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16
Q

Where can smooth muscles be found?

A
  • intestines
  • stomach
  • urinary bladder
  • blood vessels
  • uterus
17
Q

What function do smooth muscles have in these areas?

A
  • Moves food through through the digestive tract
  • empties urinary bladder
  • constricts blood vessels
18
Q

How does smooth muscle tissues carry out its functions?

A

The smooth muscle tissue carries out its functions by contracting and relaxing.

19
Q

What is the cardiac muscle tissue called?

A

The myocardium.

20
Q

Where is the myocardium located?

A

The myocardium is the thick contractile middle layer of the heart wall.

21
Q

What is the myocardium or cardiac muscle tissue composed of?

A

Composed of fibres with characteristic cross - striations of muscular tissue.
- These striations branch frequently and are interconnected forming a network.

22
Q

How does the myocardial muscle compare with skeletal muscles?

A

The myocardial muscle has less connective tissue.

23
Q

Does the myocardial tissue have a nuclei?

A

The myocardial tissue does not have a central nucleus.

24
Q

What is the ratio of cardiac muscle tissue in comparison of the rest of the heart?

A

The myocardial muscle makes up most of the heart.

25
Q

How does the myocardial muscle contract?

A

The myocardial muscle relies on the pacemaker cells for regular contractions.