Flashcards in Exam 4 Regional Anatomy; Vascularization Head & Neck; Axial Skeleton Deck (157)
What are the arteries that furnish blood to the brain? (They are paired)
-Internal Carotid Arteries
How many vertebrae are in each of the vertebral regions?
Sacrum-- 5 fused
Coccyx-- 4 fused
What are the four normal vertebral curves?
-Cervical & Lumbar (Anteriorly convex curves)
-Thoracic & Sacral (Anteriorly concave curves)
Intervertebral discs are found where?
2nd Cervical (axis) to sacrum
What is characterized by an abnormal increase in the thoracic curvature?
Kyphosis may results from what?
Erosion of the anterior part of one or more vertebrae (demineralization resulting from osteoporosis)
What is characterized by an anterior rotation of the pelvis at the hip joints producing an abnormal increase in lumbar curvature?
What are some associated causes of Lordosis?
-Weakened trunk musculature
What is characterized by an abnormal lateral curvature that is accompanied by rotation of the vertebrae?
Which abnormal curvature is the most common deformity in pubertal girls?
This abnormal curvature has the spinous processes turn toward the cavity of the abnormal curvature and the ribs protrude when bending over?
What are the different structural parts of a vertebra?
What is the name of the cervical vertebra that supports the skull and is the first cervical vertebra?
Which cervical vertebra allows for side-to-side rotation of the head?
What transmits the vertebral arteries?
What are the two craniovertebral joints?
Atlanto-occipital Joint- (Atlas & Occipital Bone)
Atlantoaxial Joint- (Atlas & Axis)
What type of joint are the craniovertebral joints?
This is a ring of bone & has the superior facets for the occipital condyles?
This cervical vertebra has the dens (odontoid) process as the body?
What is the name of the strong ligament extending between right & left tubercles of C1 & holds the dens of C2 against the anterior arch of C1, forming the posterior wall of a socket for the dens?
The Thoracic aorta supplies branches to what?
What are the paired arteries that supply blood to the brain?
Internal Carotid Arteries
The vertebral arteries are direct branches of what?
What foramina do the Vertebral arteries travel through heading toward the brain and pass through to get to the brain?
Travel: Transverse Foramina of the cervical vertebrae
Pass: Foramen Magnum
What do the vertebral arteries unit to form on the inferior posterior part of the brain?
Basilar Artery (single) on ventral surface of the pons
What arteries are branches of the common carotid artery and enter the skull through the carotid foramen (Carotid Canal)?
Internal Carotid Arteries
The Internal Carotid Arteries & External Carotid Arteries are branches of what?
Common carotid arteries (right & left sides)
The internal carotid arteries travel to inferior anterior surface of the brain and contribute to what?
Formation of CIRCLE OF WILLIS
-Supply blood to eyeballs & brain
The external carotid arteries supply blood to what structures?
Structures of the external skull as branches of maxillary & superficial temporal branches