Lab 4 Review: BI 341 OSU

something something muscles

How many cervical, thoracic, and lumbar vertebrae do you have?

7, 12, 5

A

Transverse process

B

Spinous process

C

Vertebral arch

D

Vertebral foramen

E

Body

Is syndesmosis a ligament connected only classification or ligaments and fiber?

Ligament only.

Name the top bone, then the bottom bone in order.

Atlas, Axis

What is the functional classification of the atlanto-occipital joint?

Diarthrosis

Splenius capitis

Inserting on the occipital bone and temporal bone. Originating on the spinous processes of the upper thoracic vertebrae.

From top to bottom, name the three areas on the sternum.

Manubrium, main body, xiphoid process

How many true rib pairs are directly connected to the sternum?

7

How many false rib pairs do you have?

3

How many floating ribs do you have? (not a pair, individually)

2

External Intercostals

Pulls up the rib inferior to each short muscle. Inserting on rib below and originating on rib above. Fibers run wrapping around you like an upwards V

Internal intercostals

Pulls the ribs down. Inserting on rib above and originating on rib below. Fibers run like a big downwards V on your chest

Scalenes

Originating on the cervical vertebrae, inserting on the first two ribs. Rib cage elevation

Pectoralis Minor

Originating on ribs 3-5. Inserting on coracoid process of scapula. Fixed scapula: rib cage elevation. Scapula depressed, downward rotation. Much to do with inhalation

Rectus Abdominis

Originating on the pubis and inserting on the xiphoid process (ribs 5-7). Trunk flexion at intervetebral joints

External Oblique

Originating on lower 8 ribs. Inserting on iliac crest, pubis.

Compress abdominal cavity

Trunk flexion

Rotation at intervertebral joints

Internal Oblique

Originating on anterior iliac crest. Inserting on lower ribs.

Compress abdominal cavity

Trunk flexion

Rotation at intervertebral points

Transversus Abdominis

Originating on lower 6 ribs/iliac crest. Inserts on linea alba.

Compresses abdominal cavity.

Serratus Anterior

Originating on ribs 1-8. Inserting on medial border of scapula.

Scapula protraction

Holds scapula against thoracic wall

Trapezius

Originating on occipital vertebrae. Inserting on spine and acromion of scapula and clavicle.

Scapula elevation, middle retraction, lower depression.

Levator scapulae (like elevator)

Originating on transverse processes of cervical vetebrae. Inserting on superior angle and medial border of the scapula.

Scapula ELEVATION

Rhomboideus Major

Looks like a rhombus.

Originating on spinous processes T2-T5

Inserts on medial border of scapula

Scapula elevation, retraction, abduction, and downward rotation

Rhomboideus Minor

Originating on spinous processes C7-T1

Inserting on medial border of scapula

Scapula elevation, retraction, adduction, and downward rotation

Erector spinae

Helps you stand. Keyword erector

Originating on lower vertebrae spinous processes, middle vertebrae transverse processes, and iliac crest and lower ribs.

Inserting on upper vertebrae spinous processes, upper vertebrae transverse processes, and upper ribs.

Trunk, neck extension, lateral flexion at intervertebral joints

Quadratus lumborum

Deepest muscle in low back.

Acromioclavicular joint

Structural Class: Synovial condyloid

Functional class: Synovial

Medial pterygoid Muscle

Originating on pterygoid process of sphenoid.

Inserting on mandible

Lateral pterygoid Muscle

Originating on the pterygoid process of sphenoid and its wing

Inserting on mandibular condyle

A

Acromion process

B

CoraCoid process

C

Scapular spine

D

Superior angle

E

Medial boarder

F

Inferior angle

Atlantoaxial joint

Diarthrotic

Synovial pivot

TMJ

Diarthrotic

Synovial Hinge and planar/gliding

Intervetebral - Adjacent bodies

Amphiarthrotic

Cartilaginous

Symphysis

Intervertebral - Adjacent arches

Diarthrotic

Synovial planar/gliding

Intervertebral - Adjacent spinous processes

Amphiarthrotic

Fibrous, syndesmosis

Costovetebral joint (right between your ribs and sternum and stuff)

Diarthrotic

Synovial planar/gliding

Sternocostal Rib 1

Synarthrotic

Cartilaginous Synchondrosis

Sternocostal Ribs 2-7

Diarthrotic

Synovial Planar/gliding