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Blood Vessels

Blood Vessels and Blood Circulation

QuestionAnswer
What are the five types of blood vessels? arteries, arterioles, capillaries, venules, and veins
What are the two blood circuits, and what areas does each serve? The pulmonary circuit carries blood from the heart to the lungs and back to the heart; the systemic circuit carries blood to and from all remaining tissues in the body.
What type of tissue makes up the middle tunic of arteries and veins, and how is this tissue controlled? Smooth muscle makes up the middle layer of arteries and veins. Smooth muscle is involuntary muscle controlled by the Autonomic NS.
How many cell layers make up the wall of a capillary? A single layer of squamous epithelium makes up the wall of a capillary.
What are the subdivisions of the aorta, the largest artery? The aorta is divided into the ascending aorta, aortic arch, thoracic aorta, and abdominal aorta. The thoracic aorta and abdominal aorta make up the descending aorta.
What are the three branches of the aortic arch? The brachiocephalic , left common carotid, and left subclavian arteries.
What areas are supplied by the brachiocephalic artery? The arm and head on the right side.
What is an anastomosis? A communication between two vessels.
What is the difference between superficial and deep veins? Superficial veins are near the surface; deep veins are closer to the interior and generally parallel the arteries.
What two large veins drain the systemic blood vessels and empty into the right atrium? The superior vena cava and inferior vena cava.
What is a venous sinus? a large channel that drains blood low in oxygen.
The hepatic portal system takes blood from the abdominal organs to which organ? the liver
What force helps push materials out of a capillary? What force helps draw materials into a capillary? Blood pressure helps push materials out. Blood osmotic pressure helps draw materials in.
Name the two types of vasomotor changes. Vasodilation (widening) and vasoconstriction (narrowing)
Where are vasomotor activities regulated? The medulla of the brain stem.
What is the definition of a pulse? Pulse is the wave of pressure that begins at the heart and travels along the arteries.
What is the definition of blood pressure? Blood pressure is the force exerted by blood against the walls of the vessels.
What is the most significant factor in determination of peripheral resistance? Blood vessel diameter.
What are the sensors for blood pressure called? Baroreceptors
What two components of blood pressure are measured? Systolic and diastolic
What is the medical term for high blood pressure? Hypertension
What is the general term for any hardening of the arteries? Arteriosclerosis
What is a bulging sac in a vessel wall called? Aneurysm
What is the term for profuse bleeding? Hemorrhage
What is circulatory shock? Inadequate blood flow to the tissues.
What term describes a twisted and swollen vein? Varicose
Created by: Jessica Venyke