BIOS-252 Anatomy & Physiology II with Lab

BIOS 252 Final Exam Study Guide

Chapter 10: Muscle Tissue

Characteristic Skeletal

Muscle

Cardiac

Muscle Smooth Muscle

Location Attached to

bones Heart Lines organs, airways, and

blood vessels

Presence of

Sarcomeres/Striations Yes Yes No

Nervous Control

Voluntary Involuntary

Involuntary

Presence of Intercalated Discs No Yes No

Speed of Contraction Fast Moderate

Slow

• Muscle Components (Tube inside a tube) 

• Muscle fiber- Functional Unit of Skeletal Muscle 

• Myosin head movement

o ATP must be present for myosin head to bind to actin filament.

o ATP hydrolyzes to form ADP and Phosphate to hold myosin to actin.

o Phosphate releases and in turn releases energy to force the myosin to