Several criteria are applied to the naming of muscles. These are provided in Column B. ?Identify which criteria pertain to the muscles listed in Column A and enter the correct letter(s) ?in the answer blank.
Q_ ?Q_ ?Q_ ?Q_
Q_ ?Q_ ?Q_ ?Q_
smiling
suck in your cheeks
winking
A.
B.
C.
Buccinator
Frontalis
‘
Masseter
Column A
- ?Gluteus maximus
- ?Adductor magnus
- ?Biceps femoris
- ?Transversus abdominis
- ?Extensor carpi ulnaris
- ?Trapezius
- ?Rectus femoris
- ?External oblique
Column B
A. ?Action of the muscle
B. ?Shape of the muscle
C. ?Location of the muscle’s origin and/or insertion
D. ?Number of origins
E. ?Location of muscle relative to a bone or body region
F. ?Direction in which the muscle fibers run relative to some imaginary line
G. ?Relative size of the muscle
The Correct Answer and Explanation is :
Here’s the correct identification of the muscle names based on the criteria provided in Column B:
Column A Muscles:
- Gluteus maximus – G. Relative size of the muscle
- Adductor magnus – A. Action of the muscle
- Biceps femoris – D. Number of origins
- Transversus abdominis – F. Direction in which the muscle fibers run relative to some imaginary line
- Extensor carpi ulnaris – A. Action of the muscle
- Trapezius – B. Shape of the muscle
- Rectus femoris – F. Direction in which the muscle fibers run relative to some imaginary line
- External oblique – E. Location of muscle relative to a bone or body region
Explanation:
1. Gluteus maximus:
The name maximus suggests the relative size of the muscle. “Gluteus” refers to the buttocks, and maximus indicates that it is the largest muscle in this region. Therefore, the criterion for this muscle is G. Relative size of the muscle.
2. Adductor magnus:
The term adductor refers to the action of bringing something closer, and magnus refers to the muscle being large. Thus, the criterion is A. Action of the muscle, because it primarily functions to adduct the thigh.
3. Biceps femoris:
The name biceps (two heads) refers to the number of origins the muscle has (two points of attachment). Therefore, the correct criterion is D. Number of origins.
4. Transversus abdominis:
Transversus refers to the direction of the muscle fibers, which run horizontally across the abdomen. Therefore, the criterion is F. Direction in which the muscle fibers run relative to some imaginary line.
5. Extensor carpi ulnaris:
Extensor indicates that the muscle functions to extend a joint, and carpi ulnaris points to the specific location of the muscle on the wrist and forearm, specifically the ulnar side. Hence, the correct criterion is A. Action of the muscle.
6. Trapezius:
The term trapezius comes from the shape of the muscle, which resembles a trapezoid. Therefore, the criterion is B. Shape of the muscle.
7. Rectus femoris:
Rectus means “straight,” which refers to the direction of the muscle fibers, which run straight along the thigh. The correct criterion is F. Direction in which the muscle fibers run relative to some imaginary line.
8. External oblique:
The term oblique refers to the slanted or diagonal direction of the muscle fibers. External refers to its location on the outer side of the body. Therefore, the correct criterion is E. Location of muscle relative to a bone or body region.
Each of these naming conventions is derived from specific characteristics that provide insight into the muscle’s function, location, shape, or size. Understanding these naming criteria helps in easily identifying and understanding muscle anatomy.