Anatomy and Surgery 4 Flashcards
Primary curvatures of the vertebral column
Thoracic and Sacral
Atypical cervical vertebrae
C1, C2, C7
Which cervical vertebrae has an odontoid process?
C2
Divided into 3 parts by scalenous anterior muscle
Subclavian artery
Vertebral level of hyoid bone
C3 - also bifurcation of common carotid artery
Vertebral level: thyroid cartilage
C5
Vertebral level: cricoid cartilage
C6 - also start of trachea and esophagus
Vertebral level: sternal angle of louie
T4 - also bifurcation of trachea
Vertebral level: hiatus of IVC
T8
Vertebral level: iliac crest
L4
Vertebral level: end of sigmoid colon
S3
Action: nodding and sideways tilting
Atlanto-Occipital joint
Action: turning head side to side, “no” gesture
Atlanto-Axial joint (C1 and C2)
Spinal cord is held in position by:
Denticulate ligaments on each side, Filum terminale inferiorly
Termination of spinal cord
Lower border of L1, upper border of L2
Sensory tract in the white matter of the spinal cord
Posterior horn - bodies of neurons are in the dorsal root ganglion
Motor tract in the white matter of the spinal cord
Anterior horn
Disease due to degeneration of anterior horn cells
Poliomyelitis
Anterior spinothalamic tract vs Lateral spinothalamic tract
Anterior - touch and pressure. Lateral - pain and temperature.
Ascending tract for position sense, 2 pt discrimination, fine discriminative sense, vibratory sense, stereognosis
Dorsal/Posterior Column - if already in brainstem, call it the medial lemniscus
Dermatome: tip of shoulder
C5
Dermatome: thumb
C6
Dermatome: middle finger
C7