Muscle tissue types (Break FC)

Skeletal Muscle

• Attached to bony Skeleton

• Elongated Fibers

• Striated Appearance

• Multinucleate

• Voluntary Muscle

  • Subject to conscious control

  • Responsible for reflex contraction

Cardiac Muscle

• Found only in the heart

• Branching fibers

• striated appearance with intercalated discs

• 1-2 nuclei per cell

• Involuntary muscle

• Demonstrated autorhythmicity

  • Pacemakers

  • Stimulated by ANS and Hormones

Smooth Muscle

• Visceral: found in the walls of hollow organs

  • Blood vessels, Stomach, Respiratory Passages, Urinary bladder, ect.

• spindle shaped cells

• Non-striated appearance

• Single nucleus

• involuntary muscle

• stimulated by ANS, Hormones and changes in ion levels

What type of muscle tissue is this?

What is the structure indicated by the arrow?

Is this tissue considered multinucleate?

Is this voluntary muscle tissue?

Is this tissue considered striated muscle?

Skeletal Muscle

nucleus.

yes.

Yes, skeletal muscle is voluntary muscle.

Yes.

What type of muscle tissue is this?

What is the structure indicated by the arrow?

Is this tissue considered striated muscle?

Is this tissue considered multinucleate?

Is this voluntary muscle tissue?

Cardiac

cell junction called intercalated disc.

yes.

No (but may occasionally have two nuclei)

No, involuntary.

What type of muscle tissue is this?

Is this tissue considered striated muscle?

Is this tissue considered multinucleate?

Is this voluntary muscle tissue?

Where is this type of muscle found in the body?

Smooth muscle

No.

No.

No.

Uterus, wall of digestive tract, circulatory vessels, urinary, and reproductive organ.