Muscle Part 1

How many muscle types are there?

• 1

• 2

• 3

• 4

The type of muscles are...

• smooth

• cardiac

• skeletal

• glands

• nervous

This is _______ muscle

True or false? smooth muscles have actin but not myosin

• true

• false (have both)

• false (only myosin)

Which muscles are involuntary

• heart

• lungs

• biceps brachii

• bronchioles

Intercalated discs are made of...

• gap junctions

• desmosome

• tight junctions

• ventricles

do cardiac muscles have fibers?

• yes

• no

What are the similarities between the types of muscles?

• have actin and myosin

• contract

• excitability

• extensibility

• elasticity

Select scenarios of when skeletal muscle would not be voluntary

• Having a withdrawal reflex

• Breathing (including the diaphragm)

• Running away from danger

Which muscles do have fibers?

• Smooth

• Cardiac

• Skeletal