ANTR 350 - Unit 1 Exam: Axial Skeleton, Axial Muscles, and Central
Nervous System | Michigan State University Questions and Answers
with Verified Solutions | Latest 2026 Update
Q: scapulothoracic joint
Answer:
not a true joint, no bone to bone articulation, scapula held in place by
muscles in the thorax (serratus anterior), movement of the scapula against the
posterior thorax
6 motions
Q: 6 motions of the scapulothoracic joint
Answer:
elevation (shrug/upward), depression (down/sigh),
protraction (away from vertebrae/anterior), retraction (closer to the
vertebrae/posterior),
upward rotation (glenoid fossa up, arms up), downward rotation (glenoid fossa down,
pull up)
,ANTR 350 - Unit 1 Exam: Axial Skeleton, Axial Muscles, and Central
Nervous System | Michigan State University Questions and Answers
with Verified Solutions | Latest 2026 Update
Q: 7 actions at glenohumeral joint
Answer:
flexion, extension, abduction, adduction, circumduction,
medial rotation, lateral rotation
Q: motions of 2 other joints that permit full range of motion of the glenohumeral
joint
Answer:
elevation of sternoclavicular joint and upward rotation of the scapulothoracic joint
Q: relation between mobility and stability in glenohumeral joint
Answer:
highly mobile and unstable
,ANTR 350 - Unit 1 Exam: Axial Skeleton, Axial Muscles, and Central
Nervous System | Michigan State University Questions and Answers
with Verified Solutions | Latest 2026 Update
Q: consequences of the mismatch in size of head of humerus and glenoid fossa
Answer:
fossa is small
and shallow, head of humerus is 3x larger, not a good fit
Q: glenoid labrum
Answer:
a rim of fibrocartilage, deepen the glenoid fossa
Q: rotator cuff muscles
Answer:
stabilize the shoulder joint, msucles and their tendons (muscle to bone
connection), surrounds the joint anterior, posterior, superior, no support in inferior
region,
common injury, weak, this is the strongest support structure for the shoulder joint
, ANTR 350 - Unit 1 Exam: Axial Skeleton, Axial Muscles, and Central
Nervous System | Michigan State University Questions and Answers
with Verified Solutions | Latest 2026 Update
Q: shoulder ligaments
Answer:
coracoacromial ligament, coracohumeral ligament, flenohumeral
ligament, stabilize the joint, provide a limited amount of support
Q: shoulder bursa
Answer:
subacromial bursa, subdeltoid bursa,fluid filled sacs, reduces friction during
motion to enhance mobility
Q: region of glenohumeral joint that is most vulnerable to dislocation
Answer:
anterior part of the
shoulder, least amount of support from ligaments and muscles
Nervous System | Michigan State University Questions and Answers
with Verified Solutions | Latest 2026 Update
Q: scapulothoracic joint
Answer:
not a true joint, no bone to bone articulation, scapula held in place by
muscles in the thorax (serratus anterior), movement of the scapula against the
posterior thorax
6 motions
Q: 6 motions of the scapulothoracic joint
Answer:
elevation (shrug/upward), depression (down/sigh),
protraction (away from vertebrae/anterior), retraction (closer to the
vertebrae/posterior),
upward rotation (glenoid fossa up, arms up), downward rotation (glenoid fossa down,
pull up)
,ANTR 350 - Unit 1 Exam: Axial Skeleton, Axial Muscles, and Central
Nervous System | Michigan State University Questions and Answers
with Verified Solutions | Latest 2026 Update
Q: 7 actions at glenohumeral joint
Answer:
flexion, extension, abduction, adduction, circumduction,
medial rotation, lateral rotation
Q: motions of 2 other joints that permit full range of motion of the glenohumeral
joint
Answer:
elevation of sternoclavicular joint and upward rotation of the scapulothoracic joint
Q: relation between mobility and stability in glenohumeral joint
Answer:
highly mobile and unstable
,ANTR 350 - Unit 1 Exam: Axial Skeleton, Axial Muscles, and Central
Nervous System | Michigan State University Questions and Answers
with Verified Solutions | Latest 2026 Update
Q: consequences of the mismatch in size of head of humerus and glenoid fossa
Answer:
fossa is small
and shallow, head of humerus is 3x larger, not a good fit
Q: glenoid labrum
Answer:
a rim of fibrocartilage, deepen the glenoid fossa
Q: rotator cuff muscles
Answer:
stabilize the shoulder joint, msucles and their tendons (muscle to bone
connection), surrounds the joint anterior, posterior, superior, no support in inferior
region,
common injury, weak, this is the strongest support structure for the shoulder joint
, ANTR 350 - Unit 1 Exam: Axial Skeleton, Axial Muscles, and Central
Nervous System | Michigan State University Questions and Answers
with Verified Solutions | Latest 2026 Update
Q: shoulder ligaments
Answer:
coracoacromial ligament, coracohumeral ligament, flenohumeral
ligament, stabilize the joint, provide a limited amount of support
Q: shoulder bursa
Answer:
subacromial bursa, subdeltoid bursa,fluid filled sacs, reduces friction during
motion to enhance mobility
Q: region of glenohumeral joint that is most vulnerable to dislocation
Answer:
anterior part of the
shoulder, least amount of support from ligaments and muscles
