Muscular System

Mrs. Smith has poison ivy on her shoulder, the poor thing.  She reaches her right hand over to her left shoulder to “scratch that itch”.  Which movement is occurring at her ELBOW joint?

• extension
• circumduction
• flexion
• supination

Jane feels compelled to do a few jumping jacks.  Which movement is taking place as her hands come together above her head?

• lateral flexion
• adduction
• internal rotation
• abduction

Tilt your head, bringing your right ear to your right shoulder.  What is the movement of your neck?

• rotation
• lateral flexion
• medial flexion
• internal flexion

Mrs. Cicoria is mad at Mr. Cicoria.  Her posture is as follows...She is standing with her left foot pointed forward, her right foot is pointed out to the side, her hands are on her hips, she is tapping her right foot up and down off the floor.  Which answer best describes the action of her right HIP joint?

• flexion
• external rotaion
• extension
• internal rotation

Mark is sitting in a chair, legs out in front of him resting on an ottoman.  His knees are... 

• hyperextended
• rotated
• flexed
• extended

Tom has just received his new Hoveround!  As he prepares to get into his chair safely, he straightens and braces his left arm on the left armrest of the chair.  He bends forward to flip up the footplate of the chair.  Which movements have occurred at his elbow and hip joints?

• flexion of elbow, extension of hip
• abduction of elbow, flexion of hip
• extension of elbow, flesion of hip
• abduction of elbow, adduction of hip

A(n) ________ is a muscle whose contraction is chiefly responsible for producing a particular movement. 

• synergist
• motor-unit
• antagonist
• opposition

The "kissing muscle" that purses the lips is the 

• zygomaticus
• orbicularis oris
• buccinator
• levator labii

Which of the following best describes why, when compared to other cells, muscle cells contain a large number of mitochondria?

• The muscle cells require a lot of ATP for muscle contraction.
• The mitochondria are needed to remove carbon dioxide from the cells
• Muscle fibers are strongly associated with mitochondria.
• The mitochondria produce myoglobin.

Tags

NGSS.HS-LS1-7

Which of the following does not play an important role in human locomotion?

• muscle fiber
• actin
• bone
• lymphocytes