Unit 4 Human Anatomy and Physiology

What function is shared by both the skeletal system and the muscular system?

• warming the body

• protecting vital organs

• creating red blood cells

• fighting bacterial infections

Which type of muscle tissue has interlocking fibers, allowing the transmission of the message to contract to pass through them very quickly?

• cardiac

• smooth

• bipedal

• skeletal

You've discovered a new species and are naming its muscles. Which common naming trend for human muscles is especially useful for differentiating among multiple muscles that all perform similar functions?

• amount of energy used when it moves

• density of attached tendons

• frequency in which muscle is used

• size

Based on the name, you would expect to find the flexor digitorum muscles:

• in your leg.

• in your arm.

• in your toes.

• in your fingers.

Which kind of muscles would contract to allow you to stretch out your fingers (as if you were indicating the number five?)

• pronation

• extension

• adduction

• supination

Antagonists can be described as:

• being the primary muscles controlling a movement.

• causing muscles to relax after a contraction.

• working against the prime mover muscle.

• working to support the agonist.

Your friend Elena beat her old weightlifting record yesterday, but today she woke up barely able to move her legs. She says she feels a lot of pain whenever she bends her legs. With this information, the most likely diagnosis would be:

• passive muscle strain.

• active muscle strain.

• delayed onset muscle soreness.

• acute muscle spasm.

Muscles can be described as:

• concentrated almost exclusively in the axial area of the body.

• concentrated almost exclusively in the appendicular area of the body.

• distributed across both the appendicular and axial areas of the body.

• concentrated in the tertiary area of the body.

The heart is so strong that each pump is distributing blood to the proximal ends of your fingers and toes as well as your vital organs.

• True

• False

Tags

NGSS.HS-LS1-3

Muscle strains are most common in older people, whose muscle mass has decreased over time.

• True

• False