Muscles

Origin is the attachment site that is immobile and Insertion is the attachment site that moves when muscle contracts.

• True

• False

Which number represents myosin filament?

• 1

• 5

• 3

• 4

The length of a sarcomere is represented by

• 1

• 2

• 5

• 6

The A band contains

• actin filaments only

• myosin filaments only

• both myosin and actin filaments

• neither myosin nor actin filaments

When a muscle contracts

• both actin and myosin become shorter in length

• myosin heads pull the actin towards the M line

• actin heads pull myosin towards H line

• the sarcomere length increases

How many types of muscles are there?

• 1

• 3

• 5

• 2

Skeletal muscles are voluntary.

• true

• false

Where is cardiac muscle located?

• lungs

• heart

• liver

• stomach

Tendons attach muscle to bone

• false

• true

Letter H is the ___

• Orbicularis Oris
• Masseter
• Frotalis
• Orbicularis Oculi