Muscular System

The ____________ system allows you to walk and keeps your heart beating.

About how many muscles are in the human body?

• 100

• 350

• 650

• 206

An example of a voluntary muscle would be?

• cardiac muscles

• smooth muscles

• shoulder

• pupil

Answer explanation

Voluntary muscles are muscles you control and choose when they move.

How many types of muscles are there?

Answer explanation

There are 3 types of muscles:

1. Cardiac Muscles

2. Smooth Muscles

3. Skeletal Muscles

What is an example of an involuntary muscle?

• leg

• cardiac

• shoulder

• fingers

Answer explanation

Involuntary muscles are muscles that work without you even thinking about it. For example your heart pumping or the muscles of your digestive system moving food through your body.

Abdominal muscles help you ____________ and _____________.

• Stand up tall and breathe

• eat and stretch

• sleep and breathe

• stand up tall and pump your heart

What job do cardiac muscles have?

What job do smooth muscles have?

When you sprint, you are using ___________ muscles.

• slow twitch

• fast twitch