Chapter 7:5 Muscular System Exam
Questions and Answers
Excitability - correct Answer-ability to respond to a stimulus
Extensibility - correct Answer-ability to be stretched
Elasticity - correct Answer-ability to return to its original shape
3 main kinds of muscles - correct Answer-cardiac, visceral, skeletal
Cardiac - correct Answer-forms the walls of the heart and contracts to circulate blood.
involuntary
circumduction - correct Answer-swinging the arm around in a circle
adduction - correct Answer-moving a body part toward the midline
flexion - correct Answer-bending the lower arm toward the upper arm
adduction - correct Answer-moving the arm away from the side of the body
extension - correct Answer-straightening the lower leg away from the upper leg
extension - correct Answer-increasing the angle between two bones
rotation - correct Answer-turning a body part on its own axis
adduction - correct Answer-moving the leg in toward the body
rotation - correct Answer-turning the head from side to side
muscle tone - correct Answer-the state of partial contraction. sometimes described as a
state of readiness to act
what occurs when muscles atrophy? - correct Answer-they shrink in size and lose
strength
Visceral - correct Answer-smooth muscle. found in the internal organs of the body.
contracts to cause movement in the organs. involuntary
Questions and Answers
Excitability - correct Answer-ability to respond to a stimulus
Extensibility - correct Answer-ability to be stretched
Elasticity - correct Answer-ability to return to its original shape
3 main kinds of muscles - correct Answer-cardiac, visceral, skeletal
Cardiac - correct Answer-forms the walls of the heart and contracts to circulate blood.
involuntary
circumduction - correct Answer-swinging the arm around in a circle
adduction - correct Answer-moving a body part toward the midline
flexion - correct Answer-bending the lower arm toward the upper arm
adduction - correct Answer-moving the arm away from the side of the body
extension - correct Answer-straightening the lower leg away from the upper leg
extension - correct Answer-increasing the angle between two bones
rotation - correct Answer-turning a body part on its own axis
adduction - correct Answer-moving the leg in toward the body
rotation - correct Answer-turning the head from side to side
muscle tone - correct Answer-the state of partial contraction. sometimes described as a
state of readiness to act
what occurs when muscles atrophy? - correct Answer-they shrink in size and lose
strength
Visceral - correct Answer-smooth muscle. found in the internal organs of the body.
contracts to cause movement in the organs. involuntary
