Muscular System

What type of muscle is found in the heart?

• Cardiac

• Skeletal

• Smooth

• Voluntary

Which type(s) of muscle are NOT striated?

• Cardiac

• Skeletal

• Smooth

Which type(s) of muscle are voluntary?

• Cardiac

• Skeletal

• Smooth

When muscles exert a force, they are only able to...

• pivot

• pull

• push

• rotate

Tags

NGSS.MS-PS2-1

Tendons attach...

• bone to bone

• muscle to bone

• muscle to muscle

• muscle to nerves

When a muscle contracts, it...

• dilates

• lengthens

• relaxes

• shortens

In order to move bones in opposite directions, muscles often...

• can contract and dilate

• can detach from bones temporarily

• can push and pull

• work in pairs

Tags

NGSS.MS-PS2-1

Muscles first are stimulated to contract by...

• mitochondria

• neurons

• nuclei

• sarcomeres

Myofibrils are made of...

• muscle cells

• myocytes

• sarcomeres

• Z lines

Within a sarcomere, myosin filaments pull on...

• actin filaments

• other myosin filaments

• muscle fibers

• Z lines