Circulatory System (Arteries) Flashcards
What supplies the heart? (2)
right and left coronary arteries
What does the right coronary artery arise from?
Where does it run?
arises from right side of ascending aorta
runs in right side of coronary sulcus, and supplies right atrium and ventricle
What is the posterior interventricular artery?
What does it contribute to?
terminal branch of right coronary artery that runs in posterior interventricular sulcus
contributes to blood supply of posterior aspect of both ventricles
What does the left coronary artery arise from?
What does it give rise to?
arises from left side of ascending aorta and shortly after gives rise to anterior interventricular and circumflex arteries
Where is the anterior interventricular artery?
What does it contribute to?
runs in anterior interventricular sulcus
contributes to blood supply of anterior aspect of both ventricles
Where is the circumflex artery?
What does it supply?
follows coronary sulcus to left side of heart and mainly
supplies left ventricle and left atrium
Major Arteries Arising from the Heart
What are the 2 main arteries?
pulmonary trunk
aorta
Major Arteries Arising from the Heart
What does the pulmonary trunk do?
carries deoxygenated blood to lungs
Major Arteries Arising from the Heart
What does the pulmonary trunk arise from?
right ventricle
Major Arteries Arising from the Heart
What does the pulmonary trunk divide into?
right and left pulmonary arteries under the arch of aorta
Major Arteries Arising from the Heart
What does the aorta do?
distributes oxygenated blood throughout body
Major Arteries Arising from the Heart
What does the aorta arise from?
How does it form the arch of aorta?
Where does it continue after?
from left ventricle and middle mediastinum as the ascending aorta
enters into superior mediastinum and arches to the left to form arch of aorta
continues in posterior mediastinum as descending aorta that descends on left side of vertebral column (thoracic aorta) and passes through diaphragm to enter abdominal cavity (abdominal aorta)
Major Arteries Arising from the Heart
Where does the abdominal aorta terminate and how?
at level of vertebrae LIV by dividing into right and left common iliac arteries
Major Arteries Arising from the Heart
What are the branches of the ascending aorta? (2)
left coronary artery
right coronary artery
Major Arteries Arising from the Heart
What are the 3 branches of the arch of aorta?
brachiocephalic trunk
left common carotid artery
left subclavian artery
Major Arteries Arising from the Heart
What is the brachiocephalic trunk?
first branch that divides into right common carotid artery and right subclavian artery
both have same course and branches as left common carotid artery and left subclavian artery
Major Arteries Arising from the Heart
What is the left common carotid artery?
What does it divide into?
second branch that ascends on left side of neck
divides into external and internal carotid arteries at level of superior border of thyroid cartilage
Major Arteries Arising from the Heart
What do common carotid arteries supply?
head and neck regions
Major Arteries Arising from the Heart
What is the left subclavian artery?
third branch that passes under clavicle toward left upper limb and continues as axillary artery after passing over first rib
Arteries of Head and Neck
What are the 3 main arteries?
external carotid artery
internal carotid artery
subclavian artery
Arteries of Head and Neck - External Carotid
What does it supply?
neck and part of head, which is outside the cranial cavity
Arteries of Head and Neck - External Carotid
What are the 6 branches?
superior thyroid artery lingual artery facial artery occipital artery superficial temporal artery maxillary artery
Arteries of Head and Neck - External Carotid
What does the superior thyroid artery do?
supplies thyroid gland and larynx
Arteries of Head and Neck - External Carotid
What does the lingual artery do?
supplies tongue
Arteries of Head and Neck - External Carotid
What does the facial artery do?
supplies face
Arteries of Head and Neck - External Carotid
What does the occipital artery do?
supplies part of scalp that covers occipital bone
Arteries of Head and Neck - External Carotid
What is the superficial temporal artery?
What does it do?
one of the terminal branches of external carotid artery that passes anterior to external ear
supplies scalp on sides of cranium
Arteries of Head and Neck - External Carotid
What is the maxillary artery?
What does it do?
one of the terminal branches of external carotid artery
supplies deep part of face (including nasal and oral cavities, and pharynx)
Arteries of Head and Neck - Internal Carotid
Where are these arteries?
What does it form in contribution with the vertebral artery?
enters cranial cavity after passing through carotid canal to form cerebral arterial circle (of Willis) in contribution with vertebral artery
(none in neck)
Arteries of Head and Neck - Internal Carotid
What are the 3 branches?
ophthalmic artery
middle cerebral artery
anterior cerebral artery
Arteries of Head and Neck - Internal Carotid
What does the ophthalmic artery do?
supplies contents of orbital cavity
Arteries of Head and Neck - Internal Carotid
What does the middle cerebral artery do?
supplies most of lateral surface of cerebral hemispheres
Arteries of Head and Neck - Internal Carotid
What does the anterior cerebral artery do?
supplies major parts of medial surface of cerebral hemispheres (except occipital lobe)
Arteries of Head and Neck - Subclavian
What are the 3 subclavian arteries?
vertebral artery
internal thoracic artery
thyrocervical artery
Arteries of Head and Neck - Subclavian
Where does the vertebral artery pass through and enter?
passes through transverse foramina of cervical vertebrae (except CVII), and enters skull via foramen magnum
Arteries of Head and Neck - Subclavian
What does the vertebral artery supply?
spinal cord, medulla oblongata, and cerebellum
Arteries of Head and Neck - Subclavian, Vertebral Artery
What is the basilar artery formed by?
right and left arteries join together
Arteries of Head and Neck - Subclavian, Vertebral Artery
What does the basilar artery supply?
pons and cerebellum
Arteries of Head and Neck - Subclavian, Vertebral Artery
How does the basilar artery end?
by dividing into posterior cerebral arteries that mainly supply inferior surface of cerebral hemispheres and part of medial surface of occipital lobes
Arteries of Head and Neck - Subclavian
Where is the internal thoracic artery?
descends behind costal cartilages on either side of sternum
Arteries of Head and Neck - Subclavian
What does the internal thoracic artery give rise to?
anterior intercostal arteries at level of each intercostal space, which will join with posterior intercostal arteries (branches of thoracic aorta)
Arteries of Head and Neck - Subclavian, Internal Thoracic
What do the anterior and posterior intercostal arteries contribute to?
blood supply of intercostal muscles, breast gland, muscles of anterior chest wall, and parietal sternocostal pleura
Arteries of Head and Neck - Subclavian
What is the thyrocervical artery?
What does it supply?
short artery that supplies structures at root of neck (including, but not limited to, larynx, trachea, thyroid gland, and muscles)
Arteries of Upper Limb
What are the 6 main arteries?
axillary artery brachial artery radial artery ulnar artery superficial palmar arch deep palmar arch
Arteries of Upper Limb - Axillary
What is the axillary artery?
continuation of subclavian artery contained within axilla
Arteries of Upper Limb - Axillary
Where is the axillary artery?
extends between lateral border of first ribs and lower margin of teres major muscle
Arteries of Upper Limb - Axillary
What are the 4 branches?
- thoracoacromial artery
- lateral thoracic artery
- subscapular artery
- anterior and posterior circumflex humeral arteries