Muscle tissue practice questions

What tissue is this?

Smooth muscle tissue

What are two alternative names for this tissue?

1. Involuntary, non-striated muscle

2. Visceral muscle

Cardiac muscle tissue

Where is this tissue found?

Walls of the heart (the “myocardium”)

Skeletal muscle tissue

Describe the myofibril arrangement in this tissue.

Dense, orderly arrangement producing dark striations

Describe the “cell type” for this tissue

Elongated, tapered fibers arranged as bundles, sheets, or

What degree of control do we have over this tissue type?

Voluntary control

What are two alternative names for this tissue?

1. Involuntary, striated muscle2. Heart muscle

Describe the nuclear arrangement for this tissue.

One nucleus in the center of the cell

Describe the vascular supply for this tissue.

Dense capillary network, continuous supply

Where is this tissue found in the human body?

Usually attached to the bones of the skeleton on one or both ends.

Multiple, peripheral nuclei

Good blood supply, but highly variable

What microscopic “view” is seen in this picture?

Cross-section (short axis)

Describe the “cell type” for this tissue.

Short fibers which form a branching & weaving network

with intercalated discs

How does this muscle tissue rank against the other two for blood

supply?

Ranks 2nd

Describe the contraction of this muscle tissue.

Rhythmic, powerful, yet slow to contract & relax

What is an alternative name for this muscle tissue?

Voluntary, striated muscle

What identifying characteristics (list primary & secondary) are

visible in this slide?

• 1. Primary – multiple, peripheral nuclei

• 2. Primary – long, cylindrical, parallel fibers

• 3. Secondary – dark striations

Dense (but less than skeletal), orderly producing faintly visible

striations

supply?

Ranks 3rd

What microscopic “view” is seen in this picture?

Longitudinal section (long axis)

What are the “darker” lines called?

Intercalated discs

Describe the “cell type” for this tissue.

Long, cylindrical, parallel fibers arranged as bundles within

bundles

Involuntary control

One (sometimes two in larger cells) nucleus in center of cell

Bloodvessel

Good blood supply, varies with activity

Rhythmic, rapid, repeating, fibers show coordinated contraction

Where is this tissue found?

Walls of Internal Organs

Vigorous, short duration,fibers contract independently (fatigue

easily)

Least dense, random arrangement producing no visible

striations

supply?

Ranks 1st

Involuntary control

What is the most prominent identifying characteristic visible?

Intercalated discs

What is the “striped” or “banded” look seen in this slide called?

Striated or striations

Name an organ in the body where this tissue can be found.

Walls of stomach, intestines, esophagus, bladder, uterus,

arteries, and more

The cell membrane of the tissue is called what?

Sarcolemma

Only found in the walls of the heart called the myocardium

What are these?

Multiple, peripheral nuclei

Name any muscle from the quiz lists such as biceps brachii,

trapezius, deltoid, etc.

Are there visible striations in this picture?

What is the structure between these arrows called?

The arrows point to the Z-lines. That makes what is between

them a sarcomere.

This tissue has parallel fibers, so why isn’t it skeletal muscle

tissue?

Intercalated discs visible; single, centered nucleus per cell visible;

light striations visible

Smooth muscle tissue (cross section)

Cardiac muscle tissue (cross section)

Skeletal muscle tissue (cross section)

Muscle tissue practice questions

Technology

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