Ch. 23: Vessels and Circulation Flashcards
Carry blood away from heart, thick muscular wall
Arteries
Work site, difussion and filtration
Capillaries
return blood to hear, thin walls, no elastic, one-way valves
Veins
Describe the circulation process beginning with the heart and ending with the hear (order)
heart-arteries-arterioles-capillaries-venules-veins-heart
Inner space of a blood vessel is?
Lumen
Simple squamous, inner layer of a blood vessel
tunica intima (tunica interna)
Smooth muscle, contraction leads to vasoconstriction (low diameter of lumen), relaxation results in vasodilation (high diameter of lumen), middle layer of blood vessel (Thickest)
Tunica media
Most outer layer of blood vessel, for protection, strength, ties vessels to other organs
tunic adventitia (Tunica externa)
Small blood vessels in the wall of larger blood vessels
Vasa vasorum
Pulmonary circulation order:
right ventricle pulmonary trunk r and l pulmonary arteries lungs lobar arteries lung lobes pulmonary capillaries venules pulmonary veins left atrium
Systemic circulation order
Left ventricle aorta ascending aorta aortic arch brachiocephalic artery right common carotid and right subclavian arteries left common carotid artery left subclavian artery descending thoracic aorta descending abdominal aorta
Which artery supplies blood to most parts of head and neck
Common carotid artery
Branches of subclavian arteries are
vertebral arteries and cerebral arterial circle
Arteries of the thorax are?
subclavian arteries
internal thoracic arteries
descending thoracic aorta
Arteries of the upper limb include:
subclavian arteries axillary arteries brachial arteries radial arteries ulnar arteries palmar arches
