LAB II: Spinal Cord & Nerves, Vertebral Column I, Pectoral Girdle

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superior

C1-C7 exit (superior/inferior) to respective vertebrae

inferior

C8 and following spinal nerves exit (superior/inferior) to respective vertebrae

7, 12, 5, 5, 4

Number of Vertebrae __ cervical __ thoracic __ lumbar __ sacral __ coccygeal

8, 12, 5, 5, 1

Number of spinal nerves __ cervical __ thoracic __ lumbar __ sacral __ cocygeal

33, 5

____ vertebrae are organized into ____ regions

rootlets

______ from a single spinal cord segment converge to form a root

lesser tubercle of humerus

anterior

dermatome

area of skin where a spinal nerve is responsible for sensation

L1 and L2

between what vertebral discs can you find the conus medullaris?

dorsal root ganglion

big bump

filum terminale

continuation of pia mater

arachnoid mater

deep to dura mater, webbing

myotome

group of muscles innervated by a nerve responsible for motor function

surgical neck

is the surgical neck or anatomical neck of the humerus more commonly fractured?

greater tubercle of humerus

lateral

deltoid tuberosity

lateral side, small protrusion

pia mater

microscopic layer of meninges, directly on spinal cord not visible to the naked eye

dura mater

most superficial layer of meninges, extends over brain

ventral root

motor function only

nerve plexus

network of nerves

coronoid fossa

oriented anteriorly

glenoid fossa

oriented laterally

olecranon fossa

oriented posteriorly

scapular spine

oriented posteriorly

subdural

potential space btwn dura & arachnoid mater

lumbosacral enlargement of spinal cord

sensory & motor neurons for the lower limb

cervical enlargement of spinal cord

sensory & motor neurons for the upper limb

dorsal root

sensory function only

subarachnoid

space between arachnoid & pia mater contains CSF (cerebrospinal fluid)

epidural

space between bone and dura mater

both motor & sensory function

spinal nerve, dorsal ramus, ventral ramus have...

cauda equina

spinal nerves, hairlike after conus medullaris

conus medullaris

tapering inferior end of spinal cord; typically @ intervertebral disc btwn L1 and L2

sternum, acromion of scapula

the clavicle articulates with the...

Between L3 and L4 or L4 and L5

what is the site of a lumbar puncture?

scapular notch; suprascapular n. and suprascapular a.

what is this and what runs through it?

glenohumeral joint

what joint is dislocated in a shoulder dislocation?

acromioclavicular joint

what joint is dislocated in a shoulder separation?

radial n. and deep brachial a.

what runs in the radial (spiral) groove

intervertebral foramina

where spinal nerves exit vertebral column

acromioclavicular (AC) joint

where the acromion articulates the lateral end of the clavicle

glenohumeral joint

where the head of the humerus articulated w/ glenoid fossa

sternoclavicular joint

where the sternal end of the clavicle articulates with the sternum

scapulothoracic articulation

where the thoracic ribcage articulates with the scapula


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