Question

question 1
the origin of a muscle is on the femur, and the insertion is on the tibia. when it contracts, it bends the knee. its fibers run parallel to the body. which of the following terms might be part of its name?
extensor
abductor
flexor
adductor
question 2
another name for a sphincter muscle is a _____ muscle.
spiral
circular
fusiform
convergent
question 3
there are more than 600 muscles in the body.
true
false

Explanation:

• Question 1: Flexor muscles bend joints. Since the muscle in question bends the knee, "Flexor" is the appropriate term.
• Question 2: Sphincter muscles are circular - shaped muscles that control the opening and closing of body passages.
• Question 3: The human body has over 600 muscles, which is a well - known anatomical fact.

Answer:

• Question 1: C. Flexor
• Question 2: B. circular
• Question 3: A. True