Open Question
The thick, bandlike muscle of mastication that covers much of the ramus of the mandible is the:
a. masseter muscle.
b. temporalis muscle.
c. lateral pterygoid muscle.
d. risorius muscle.
10. Muscles
Muscle Naming
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Based on the name, how does the fibularis brevis compare to the fibularis longus?
A
The fibularis brevis muscle is relatively short while the fibularis longus is relatively long.
B
The fibularis brevis muscle is flat while the fibularis longus is triangular.
C
The fibularis brevis muscle is relatively slender while the fibularis longus is relatively wide.
D
The fibularis brevis muscle has a pennate fascicle arrangement while the fibularis longus has a parallel fascicle arrangement.
Verified step by step guidance1
Begin by understanding the anatomical terminology: 'brevis' means short and 'longus' means long. This indicates a difference in length between the two muscles.
Consider the shape of the muscles: 'brevis' suggests a shorter, possibly flatter muscle, while 'longus' suggests a longer, potentially more triangular muscle.
Examine the width and slenderness: 'brevis' implies a more slender muscle, whereas 'longus' suggests a wider muscle.
Analyze the fascicle arrangement: 'pennate' refers to a feather-like arrangement, which is typical for muscles that are shorter and more compact, while 'parallel' refers to fascicles running parallel to each other, common in longer muscles.
Integrate these anatomical features to compare the fibularis brevis and fibularis longus, considering their length, shape, width, and fascicle arrangement.
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