Anatomy lecture 2 Flashcards
The Saggital plane divides….
Left from Right
The Frontal plane divides…
Front from Back
The Transverse plane divides
Up from Down
What is the movement called moving the thumb away from the hand but still to the side
Thenar extension
What is the movement called when you bring the thumb across the hand.
Thenar Flexion
What is the movement where you angle the foot inward by bending the ankle
Inversion
What is the movement where you angle the foot outward by bending the ankle
Eversion
The Primary curves of the spine:
Thoracic and Sacral
Secondary curves of the spine:
Lumbar and Cervical
What causes the secondary spinal curves to form?
Standing
3 types of Scoliosis
Idiopathic, Neuromuscular, Congenital
How many vertebrae are there?
33
The lamina is ontop of the…
Spinous Process
The pedicle of the vertebrae is closest to the….
Vertebral body
Describe the transverse foramen…
Is the small hole on the lateral sides of the cervical vertebrae
The OA joint is comprised of ____ and does ____
Atlas and Occipital bone… Head Nodding
The AA joint is comprised of _____ and does _____
Atlas and Axis …. Head Rotation
Spondylolithesis is….
Fracture at the Pars Interarticularis that has also separated
Purposeful activity of the Lat
Wheelchair mobility
Purposeful activity of the Trapezius
Reaching Overhead/ rowing a kayak
What is this movement
Thenar Extension
What is this movement?
Thumb Abduction
What is this ligament called that has 3 parts?
Cruciate Ligament
What is this ligament?
Alar Ligament
What is this boney protrusion called?
Odontoid Process/ Dens
What is this structure on the axis?
Transverse Process
Name these 4 muscles left to right
Latissimus Dorsi, Trapezius, Levator Scapulae, Rhomboid Major and Minor
What is the innervation of the Latissimus Dorsi
The Thoracodorsal nerve C6, C7, and C8
What is the innervation of the Trapezius
Spinal Accesory Nerve and the Ventral Ramus nerve. C3 and C4
What is the innervation of the Levator Scapulae?
Cervical C3 and C4 and Dorsal Scapular Nerve from C4 and C5
The Mesoderm becomes the…
Muscles + Skeletal System + Circulatory System
The Endoderm becomes the….
Digestive + Urinary System + Liver
The Ectoderm becomes the….
Skin + Nervous System+ Cornea and Lens of eye
By what week in Fetal development are all organs structured
Week 9
A developing human is referred to as an embryo
3-8 weeks
A developing human is referred to as a Fetus after…
Week 9+
name this structure
Transverse Process
Dermatomes and Myotomes originate from what week of embryogenesis
Week 3
The dorsal portion of the somite’s proliferates to form the
Dermis
44 Pairs of somites turn into how many spinal nerves
31
What is at the tip of a limb bud
apical ectodermal ridge
What week of embryo development do the upper limb buds appear?
Week 4
the upper limb buds
appear as elevations of the _____ segments
C5-T1
The lower
limb buds grow laterally from broader bases formed by
the ______ segments.
L2-S2
What is this area of the budding limb called
Zone of Proliferation
_______ occur where gaps develop between the
precursors of the long bones.
Flexures
By the end of the 7th week, the
proximal parts of the upper and
lower limbs undergo a _____
90 Degree turn
Name 1 and 2
Pedicle + Lamina
_____ Represents fusion of two or more digits
Syndactyly
extra digits, typically occurs
bilaterally
Polydactyly
enlarged digits
Macrodactyly
absence of digits
Adactyly
“lobster-claw
deformity”, typically missing middle
digit, typically occurs unilaterally
Ectrodactyly
Phocomelia
Shortened Extremities
Meromelia
partial absence of one or
more extremities
disorder in which the two sides of
vertebral arches, usually in lower vertebrae, fail to
fuse during development
Spina bifida
Spina bifida occulta vs meningocele vs myelomeningocele
Just a defect, spinal fluid protruding, spinal cord protruding.
What innervates the Rhomboids?
Dorsal Scapular Nerve C4 + C5
What are the Rhomboids actions?
Adduct/retract the scapula
Downwardly rotate the scapula
Fix scapula to thoracic wall
Proximal Attachment/ Origin of Rhomboids Minor and Major
The Major attaches at the spinous process of T2 to T5
The Minor attaches at the Spinous Process of C7 to T1.
what is this joint?
Left AO joint
Name these intermediate back muscles from top (Hint: ribs)
Serratus posterior superior and Serratus posterior inferior
What is the Proximal Attachment of the Latissimus Dorsi
Inferior Angle of the Scapula, Spinous Process of the inferior 6 Thoracic Vertebrae, Thoracolumbar fascia, and 3-4 inferior ribs, Iliac crest
What is the Distal Attachment of the Latissimus Dorsi
Floor of intertubercular sulcus of humerus
Proximal Attachment of the Trapezius
External occipital protuberance, medial 1/3rd of superior nuchal line of
the occiput, ligamentum nuchae, and SP of C7 to T12
Name these 3 muscles (hint: 3 parts)
Upper Trap, Middle Traps, Lower Traps
Levator Scapulae proximal attachment
Posterior tubercles of TP of C1 to C4
Levator Scapulae distal attachment
Medial border of scapula between superior angle and root of
spine of scapula
The Upper Part of the Traps does what action? 5 actions.
- Extend the head and neck when flexed bilaterally
- sidebend the neck when flexed unilaterally (To the SAME SIDE as the flexed muscle)
- Rotate the head and neck to the OPPOSITE SIDE of the muscle that flexes
- upwardly rotates scap
- elevate scap
name this structure
carotid tubercle
What is this bone?
Occipital Bone
The middle part of the traps does what action? 2 actions.
- Adduct the scapula ( AKA RETRACTION).
- Stabilize the scapula
The lower part of the traps does what action? 2 actions.
- Depress the scapula
- Upwardly rotate the scapula
Where do the traps attach? (Distal attachment?
Lateral 1/3rd of clavicle, acromion and spine of scapula
What is the distal attachment of the rhomboids?
Major: medial border of the scapula between the spine of the
scapula and inferior angle
Minor: medial border of the scapular spine
What is the proximal attachment of the Levator Scap
Posterior tubercles of TP of C1 to C4
Zygapophysial Joints: Orientation of Lumbar Spine?
ear muffs, flat side facing in
Zygapophysial Joints: Orientation of cervical spine?
ramp
Zygapophysial Joints: Orientation of thoracic spine?
Flat hand, stop sign
embryonic tail-like caudal
eminence is present in the embryo from….
week 4 to week 8
Name this structure
Uncus of body
name these 2 structures
Transverse Foramen, and the Articular facet of the odontoid process
C3 C4 C5 Keep you alive meaning
S2 S3 S4 Keep Poo off the floor
Phrenic nerve to diaphram C3 C4 C5
Pudendal nerve S2 S3 S4
What is this structure?
Capsule of the AO joint