Question

question 52
0.25 pts
movement is one of the most distinctive and easily observed characteristics of life.
true
false
question 53
0.25 pts
the muscle that allows the thumb to be drawn across the palm to touch the tip of any finger is the:
extensor digitorum.
opponens pollicis.
palmaris longus.
flexor carpi radialis.
question 54
0.25 pts
the posterior arm muscle that extends the forearm is the:
biceps brachii.
triceps brachii.
supinator.
brachialis.

Explanation:

Question 52

The characteristics of life include organization, metabolism, responsiveness, growth, development, reproduction, and homeostasis. Movement is not a universal characteristic of all living things (e.g., plants have limited visible movement), so the statement is false.

• Extensor digitorum extends the fingers.
• Opponens pollicis allows the thumb to oppose (touch the tips of other fingers).
• Palmaris longus is involved in wrist flexion.
• Flexor carpi radialis flexes the wrist. So the correct muscle is opponens pollicis.

• Biceps brachii flexes the forearm.
• Triceps brachii (posterior arm muscle) extends the forearm.
• Supinator supinates the forearm.
• Brachialis flexes the forearm. So the correct muscle is triceps brachii.

Answer:

False

Question 53