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Anatomy Exam 2 Ch:11 -Muscles of the Body
Terms in this set (11)
Use your knowledge for word roots and the criteria for naming muscles to state what the name indicates about each of the following muscles: (a) latissimus dorsi, (b) sternocleidomastoid, (c) serratus anterior, (d) adductor magnus
(a) Latissimus dorsi means "wide back", an excellent description of this superficial back muscles. (b) sternocleidomastoid indicates that the origin of this muscle is at the sternum and clavicle and that its insertion is on the mastoid process of the temporal bone. (c) Serratus anterior refers to the sawlike appearance of this muscle, much like a serrated knife, and its location on the anterior/lateral thoracic wall. (d) adductor magnus is the large adductor muscle of the thigh.
In what muscle compartments are the bicep brachii and brachialis muscles located? In what compartment is their antagonist muscle located?
The biceps brachii and brachialis are located in the anterior compartment of the arm. Their antagonist muscle group, the tricep brachii, is located in the posterior compartment of the arm.
What are the action of the. muscles in the posterior compartment of the thigh? What muscles group functions as an antagonist to these muscles?
Muscles in the posterior compartment of the thigh extend the thigh and flex the leg. The quadriceps femoris group functions as an antagonist to these muscles.
List two muscles that act in synergy as prime movers for plantar flexion.
The gastrocnemius and soleus act in synergy as prime movers for plantar flexion.
What muscles is the most important muscle for respiration? What additional muscles aid in inspiration and forceful expiration?
The diaphragm is the most important muscle for inspiration. The intercostal muscles, pectoralis minor, the scalenes. and sternocleidomastiod aid in forceful inspiration.
What muscles is the prime mover of dorsiflexion? Why is this motion important during walking?
The prime mover of dorsiflexion is the tibialis anterior. Dorsiflexion of the foot keeps the toes from dragging during the recovery phase of walking.
The quadriceps femoris muscles include all of the following except the
A prime mover of thigh flexion at the hip is the
Someone who sticks out a thumb to hitch a ride is ___ the thumb
The major muscles used in the up portion of a chin up are the
latissimus dorsi and brachialis
The anatomical snuff box
contains the styloid process of the radius
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