1016MSC Study Guide - Midterm Guide: Anatomical Terms Of Motion, Extensor Digiti Minimi Muscle, Extensor Carpi Ulnaris Muscle
27 Jun 2018
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Review Questions and Concept Checks!
upper limb muscles!
Topic 2.3!
Q1. What action is performed by the arms when you pick up a baby? Which muscles are
involved?!
"
Q2. Describe the action of the deltoid muscle and its antagonists.!
"Helps in flextion, extension, lateral/external rotation, medial/internal rotation, does
most of the abduction (supraspinatus does first 10 degrees, deltoid does the rest)!
Q3. Forearm flexion and extension. Describe the muscles involved and their specific roles
in each action.!
"
Q4. In which compartment would you find wrist extensors?!
"Posterior forearm !
Q5. Which muscle is the prime mover for arm extension? Name a movement in real life
that is performed by this muscle.!
"latissimus dori!
walking or running (arms moving anteriorly then posteriorly)!
Topic 2.3 concept check
Recall and list the actions of the arm at the shoulder joint. Which muscles help perform
these actions?!
action
example
direction
muscle
elevation
shrugging shoulders
superiorly
trapezius (superior),
levator scapulae,
rhomboids
depression
pulling down when when
climbing rope (pulling
yourself up)
inferiorly
trapezius (inferior)
abduction/protraction
punching
anterolaterally
serrates anterior,
pectoralis minor
adduction/retraction
pulling back when
rowing
posteromedially
trapezius (middle),
rhomboids
upward rotation
glenoid cavity faces up
serrates anterior,
trapezius
downward rotation
glenoid cavity faces
down
pectoralis minor, lector
scapulae, rhomboids
muscle
job
action
flexors
biceps brachii
prime mover
flexes and supinates,
lifts radius
brachialis
synergist
flexes only!
lifts ulna
brachioradialis
synergist
flexes, best when
semipdonates forearm
extensors
triceps brachii
prime mover
extend forearm
anconeus
synergist
extends forearm
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Document Summary
Review questions and concept checks upper limb muscles. Helps in extion, extension, lateral/external rotation, medial/internal rotation, does. Describe the action of the deltoid muscle and its antagonists. most of the abduction (supraspinatus does rst 10 degrees, deltoid does the rest) Describe the muscles involved and their speci c roles in each action. muscle job action. Exors biceps brachii prime mover brachialis synergist brachioradialis synergist. Exes, best when semipdonates forearm extensors triceps brachii prime mover extend forearm anconeus synergist extends forearm. Name a movement in real life that is performed by this muscle. walking or running (arms moving anteriorly then posteriorly) latissimus dori. Recall and list the actions of the arm at the shoulder joint. Upward rotation: (moving arm up) serrates anterior, trapezius. Downward rotation: (moving arm down) pectorals minor, levator scapulae, Abduction: (arm forward, away from body) serratus anterior, pectoralis minor. Recall and list the actions of the forearm at the elbow.
