A&P I - Practical 2 (Bones/Innervations/Etc.)

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The ulna is ________ to the radius.

medial

The posterior division of the brachial plexus is formed from...

All three trunks

Costal groove

Allows for the deposition of the intercostal... Nerve Vein Artery Located interiorly

Lesser tubercle of humerus

Anterior

The musculocutaneous nerve innervates the...

Anterior compartment of the arm (Ex: Biceps brachii, brachialis)

Coronoid fossa

Anterior depression of distal humerus

The two divisions of the brachial plexus are the...

Anterior division Posterior division

All ligaments of the vertebral column limit flexion, except for _____________ ________________ _______________, that limits extension/hyperextension

Anterior longitudinal ligament

Transverse costal facets

Articulate with tubercles of ribs (T1-12 with ribs 1-12 respectively)

Inferior costal facets

Articulates head of rib with next lowest vertebrae (Ex: T6 with rib 7)

Superior costal facets

Articulates head of rib with same level vertebrae (Ex: T7 with rib 7)

Auricular surface of sacrum

Articulates with auricular surface of ilium

Auricular surface of ilium

Articulates with auricular surface of sacrum Forms sacroiliac joint

Head of radius

Articulates with capitulum of humerus

Articular tubercle of rib

Articulates with costal facet of transverse vertebrae

Radial notch

Articulates with head of radius

Ulnar notch

Articulates with head of ulna

Head of rib

Articulates with the costal facet of a thoracic vertebral body.

Lateral horn

Autonomic cell bodies

The posterior cord gives rise to which nerves?

Axillary Radial

The ulnar nerve innervates the...

Medial side of anterior compartments of the forearm

Sternal body

Middle of sternum

C7 alone forms the

Middle trunk

Ventral root

Motor axons (Output)

Ventral horn

Motor cell bodies

The lateral cord gives rise to which nerves?

Musculocutaneous Median

Neck of rib

Between head and tubercle

Sternal angle

Between manubrium and body of sternum (approx. at rib 2)

Metacarpophalangeal joint (MP)

Between metacarpal and proximal phalanx

Distal interphalangeal joint (DIP)

Between middle and distal phalanx

Proximal interphalangeal joint (PIP)

Between proximal and middle phalanx

Elements of cervical vertebrae

C1 (Atlas) & C2 (Axis) are different Small body Bifid spinous process Transverse foramen

The roots of the brachial plexus are associated with what nerves?

C5-T1

Sacral canal

Central canal transmitting the dorsal and ventral roots of spinal nerves S1 to S6 and the coccygeal spinal nerve

Lordosis & Kyphosis

Cervical lordosis Thoracic kyphosis Lumbar lordosis

Acromioclavicular ligament

Connects acromion and clavicle

Anterior Longitudinal Ligament (ALL)

Connects anterior surfaces of vertebrae

Coracoacromial ligament

Connects coracoid process to acromion

Coracoclavicular ligament

Connects coracoid process to clavicle

Annular ligament

Connects head of radius to ulna

Ligamentum flavum

Connects laminae of adjacent vertebrae

Posterior Longitudinal Ligament (PLL)

Connects posterior surfaces of vertebrae

Interspinous ligament

Connects the spinous processes of adjacent vertebrae

Supraspinous ligament

Connects tips of spinous processes together

Sympathetic trunk

Contains autonomic nerve fibers

C2 (Axis)

Dens fits into anterior arch of C1 Atlantoaxial joint

Posterior (dorsal) & anterior (ventral) sacral foramen

Emergence of dorsal & ventral rami of spinal nerves

The sacrum and coccyx have _________ vertebrae.

Fused

Medial sacral crest

Fused spinous processes of sacral vertebrae

Parts of the radius

Head Radial tuberosity Styloid process Ulnar notch

Os coxae

Hip bone

Acetabelum

Hip socket

Jugular notch of sternum

Indentation at the top of the manubrium

C8 & T1 merge to form the

Inferior trunk

The cords in the brachial plexus are...

Lateral Posterior Middle

The axillary nerve innervates the...

Lateral compartment of abducting arm (Ex: Deltoid & teres minor)

The median nerve innervates the...

Lateral side of anterior compartment of forearm

Lamina

Layer, sheet of bone

Pubic symphysis

Made of fibrocartilage

Intervertebral disc

Mass of fibrocartilage between adjacent vertebrae

The median nerve comes from which two cords?

Medial & lateral

C1 (Atlas)

No body Anterior arch that articulates with dens of C2 Occipito-atlanto joint

Parts of ulna

Olecranon Coronoid process Trochlear notch Radial notch Styloid process

Intervertebral foramen

Opening located between adjacent vertebrae for exit of a spinal nerve

Acromion

Outward extension of the shoulder blade forming the point of the shoulder

Metacarpal V is the...

Pinky

Greater tubercle of humerus

Posterior

Parts of the brachial plexus

Roots Trunks Divisions Cords Branches

Carpal bones

Scaphoid Lunate Triquetrum Pisiform Hamate Capitate Trapezium Trapezoid

Dorsal root

Sensory axons (Input)

Dorsal horn

Sensory cell bodies

Dorsal root ganglion

Sensory cell bodies

The radial nerve innervates the...

Posterior compartment of the arm & forearm (Ex: Triceps brachii)

Olecranon fossa

Posterior depression of distal humerus

Spine of scapula

Posterior ridge

Phalanges

Proximal phalanx Middle phalanx Distal phalanx

Is the thumb on the radial or ulnar side? The pinky?

Radial Ulnar

Intertubercular suclcus

Region between greater and lesser tubercles

Flexor retinaculum

Roof of carpal tunnel

Body of rib

Shaft

Spinous process

Sharp, slender projection Projects out medially

Scapula

Shoulder blade

Superior articular process

Site of articulation with inferior articular process of the next highest vertebra

Inferior articular process

Site of articulation with superior articular process of the next lowest vertebra

Mnemonic for remembering carpal bones

So Long To Pinky Here Comes The Thumb Starts at proximal row on thumb side and goes around

Bifid spinous process

Splits into 2

Radial collateral ligament

Stabilizes the lateral side of the elbow

Ulnar collateral ligament

Stabilizes the medial side of the elbow

C5 & C6 merge to form

Superior trunk

Pedicle

Supporting column

Paravertebral ganglion

Sympathetic chain of neurons that run parallel to the spinal cord.

Coccygeal vertebrae

Tailbone

Anterior division of the brachial plexus stems from... (2)

The convergence of the superior & middle trunks The inferior trunk

Metacarpal I is the...

Thumb

Elements of thoracic vertebrae

Transverse costal facets Superior costal facets Inferior costal facets

Angle of rib

Turn of rib

Transverse processes

Two lateral projections from the vertebral arch

The medial cord gives rise to which nerves?

Ulnar Median

Humerus

Upper arm bone

Manubrium

Upper portion of sternum

The roots of the brachial plexus stem from the...

Ventral rami

Transverse foramen

Vertebral artery and vein pass through here

Vertebral body

Weight bearing

Carpal

Wrist


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