Muscular system

When muscles contract, the length of the muscle

• lengthens
• extends
• shortens
• stretches

What do tendons attach?

• muscles to ligaments
• muscles to other muscles
• muscles to bones
• muscles to organs

How many types of muscles are there?

• 2

• 4

• 3

• 1

Muscles are composed of which of the following?

• Lipids
• Protiens
• Carbohydrates
• Fats

Tags

NGSS.HS-LS1-6

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

Skeletal muscles are attached to which of the following? 

• Bones and ligaments 
• Ligaments and tendons
• Tendons and bones
• Bones and fat 

The nerve releases a chemical called a

• neurotransmitter

• neuron

• myofibril

• cell

How do pairs of skeletal muscles work together?

• while one contracts, the other returns to original length
• both muscles contract at the same time
• both muscles relax at the same time
• 1 muscle pulls on the bone and the other pulls on the first muscle

Tags

NGSS.MS-PS2-1

Which connective tissue surrounds the whole muscle?

• epimysium

• endomysium

• perimysium

Which of the following MUST be present for aerobic respiration? 

• carbon dioxide
• lactic acid 
• glucose
• oxygen

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3