Muscular System

Muscles give us shape and help us maintain good posture?

• True
• False

Muscles that you cannot choose to contract are called _______.

• involuntary muscles
• voluntary muscles

When a muscle contracts, it _______

• gets longer
• gets shorter
• gets thinner
• grows hair

What are the 3 types of muscle tissue?

• Thigh, Calf, & Shoulder
• Traps, Forearm, & Abs
• Hamstring, Biceps, & Triceps
• Smooth Muscle, Cardiac Muscle, & Skeletal Muscle

Which muscle type is found in your stomach, bladder, and intestines?

• Skeletal
• Smooth
• Cardiac
• Straight

Which type of muscle is found in your heart?

• Skeletal
• Smooth
• Cardiac
• Straight

Which muscles are involuntary?

• skeletal
• cardiac
• smooth
• smooth and cardiac

The connective tissue sheath that surrounds a muscle fasciculus is the

• epimysium

• endomysium

• perimysium

given the following events:

1.acetycholine broken down

2.acetylcholine moves across the synaptic cleft

3.action potential reaches the terminal branch (presynaptic terminal)

4.acetylcholine combines with a receptor molecule on a skeletal muscle (postsynaptic membrane)

5.action potential produced in skeletal muscle cell

Choose the arrangement that lists the events in the order the occur at a neuromuscular injunction

• 2,3,4,1,5

• 3,2,4,5,1

• 3,4,2,1,3

• 4,5,2,1,3

Muscles are composed of which of the following?

• Lipids
• Protiens
• Carbohydrates
• Fats