Muscular system

How many types of muscles are there?

• 2

• 4

• 3

• 1

What are the characteristics of the cardiac muscle?

• Involunatary

• Found in the heart

• Banded Appearance

• Dense connective tissue packaging

Smooth Muscle is found in the?

• Heart

• Facial

• Organs

• Legs

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 that oppose another muscle are

• synergist

• hateful

• prime movers

• antagonists

Which of the following describes the sarcomere? 

• The basic unit of muscle’s cross-striated myofibril
• . A protein band which defines the boundary between one sarcomere 
•  Various muscle proteins 
• Contains the protein, actin

Which of the following describes muscle bundles? 

• Long, multi-nucleated, thread-like cells
• Set of muscle fibers grouped together 
• Considered to the cell of the muscle 
• Organelles which are unique to muscle tissue

Tags

NGSS.HS-LS1-2

The nerve releases a type of chemical called a

• neurotransmitter

• neuron

• myofibril

• cell

How many muscles do you have?

• 206
• 550-600
• 700-800
• 650-700