Exam Flashcards
At what level in the cervical spine does rotation mostly occur?
C1/C2
What are the atypical vertebrae of the cervical spine and what makes them atypical
- C1: posterior tubercle instead of spinus process
- C2: atypical because of dens.
- C7: longer spinous process
What are the atypical vertebrae of the thoracic spine and what makes them atypical
- T1: Complete costal facet (instead of having costal facet on top and bottom it just has one entire facet).
- T9 – T12: Own complete costal facet. Spinous process start to mimic lumbar spinous processes.
What are the atypical vertebrae of the lumbar spine and what makes them atypical
- L5: Larger body and transverse processes makes it atypical. It is transitional as it transitions into sacrum.
What are the common ligaments of the spine?
Anterior longitudinal ligament
Posterior longitudinal ligament
Ligamentum Flavum
Interspinous ligament
Ligamentum Nuchae (Nuchal Lig)
Intertransverse ligament
function of Anterior longitudinal ligament
Restricts Extension
function of Posterior longitudinal ligament
Restricts Flexion
function of Ligamentum Flavum
Connects the lamina of vertebrae to the next (from C2-S1)
Helps preserve upright posture
Resists excessive separation between lamina
function of Interspinous ligament
Connect adjacent spinous processes
Limit flexion by restricting separation of the spinous processes
function of Ligamentum Nuchae (Nuchal Lig)
runs between spinous processes
Helps sustain the weight of the head and limit forward flexion
function of Intertransverse ligament
It provides stability in the cervical spine in lateral flexion.
What are the 4 various descriptions of rib movement at various levels?
Pump handle
Superior/inferior (upper ribs 1– 5)
Bucket handle (lower ribs 6 – 10)
Superior/inferior
Lateral/medial
Caliper (floating ribs 11 & 12)
Medial/lateral
Torsion
Superior rotation
What are the muscles of the erector spinae?
spinalis, iliocostalis, longissimus.
what are the flexors of the trunk
Rectus abdominis
Psoas major and minor
Iliacus
what are the extensors and lateral flexors of the trunk
Erector Spinae
Quadratus lumborum
what are the rotators of the trunk
External oblique
Erector spinae
Transversus abdominis
Internal oblique
What are some of the differences in the pelvis between males and females?
Gender Dimorphism
Females:
Wider and broader yet lighter
Oval-shaped
Less prominent ischial spines
Greater sub-pubic arch angle
shorter, more curved sacrum
Males:
Thinner and narrow yet heavier
Heart shaped
more prominent ischial spines
more narrow sub pubic arch
longer sacrum
Name the muscles involved in PRONATION of the forearm
Muscles:
Pronator teres
Pronator quadratus
Locations of the muscles involved in pronation of the forearm
Pronator teres
Located proximally
Pronator quadratus
Located distally
Name the muscles involved in SUPINATION of the forearm
Supinator
Biceps brachii
Name the joints involved in pronation and supination of the forearm
Joints:
Proximal Radioulnar Joint:
Synovial pivot joint - Uniaxial
Distal Radioulnar Joint:
A synovial pivot joint - uniaxial
Name the only joint that joins the upper limb to the axial skeleton and its function
sternoclavicular joint
Function – ball and socket
Explain scapulohumeral rhythm.
the glenohumeral joint (GHJ) and scapulothoracic joint (ST) move in a 2:1 ratio.
When the arm is abducted 180 degrees, 60 degrees occurs by rotation of the ST, and 120 degrees by abduction of the GHJ.
First 30 degrees of abduction largely occurs at GHJ.
30 degrees on, GHJ & ST joint move simultaneously
List muscles involved with flexion of the glenohumeral joint
Flexion
Pectoralis major
Coracobrachialis
Deltoid (anterior fibres)
Long head of biceps brachii
List muscles involved with extension of the glenohumeral joint
Extension
Latissimus dorsi
Long head of Triceps brachii
Deltoid (posterior fibers)
Teres major
List muscles involved with abduction of the glenohumeral joint
Abduction
Supraspinatus
Deltoid
List muscles involved with adduction of the glenohumeral joint
Adduction
Pectoralis major
Latissimus dorsi
Coracobrachialis
Teres major
List muscles involved with internal rotation of the glenohumeral joint
Subscapularis
Teres major
Latissimus dorsi
Pectoralis major
Deltoid (anterior fibers)
List muscles involved with external rotation of the glenohumeral joint
Infraspinatus
Teres minor
Deltoid (posterior fibers)
List muscles involved with flexion of the humeroulnar joint
Flexion
Biceps brachii
Brachialis
Brachioradialis
List muscles involved with extension of the humeroulnar joint
Extension
Triceps brachii