Concept explainers
Match each numbered item with the most closely related lettered item.
rhomboid muscles...............................
To review:
Match the term rhomboid muscles with the most closely related description given below:
abducts the toes
flexes hip and/or lumbar spine
adduct (retract) scapula
connective tissue bands
plantar flexion at ankle
originates on ilium
flexes elbow
dorsiflexes ankle and inverts foot
lateral rotation of humerus at shoulder
supinates forearm
extends, adducts, medially rotates humerus at shoulder
Introduction:
The levator and rhomboid muscles attach to the posterior surfaces of the thoracic and cervical vertebrae. These muscles insert across the scapula’s vertebral border, between the inferior and superior angles.
Explanation of Solution
In general, rhomboid muscles are called rhomboids. These muscles are rhombus-shaped. Contracting the rhomboid retracts or adducts the scapula, thus pulling it toward the back’s center. It also rotates the scapula in the downward direction.
Therefore, it can be concluded that the term rhomboid muscles can be correctly matched with option (c) adduct (retract) scapula.
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Chapter 11 Solutions
HUMAN ANATOMY W/MAST A+P E-TEXT