1. Blood Vessels & Circulation Flashcards
The closed system of vessels that transports blood to and from the lungs & body tissues
Vascular System
The hearts _______ pump blood into the arteries
Ventricles
________ carry blood away from the heart and toward the capillaries in the tissues
Arteries
________ is the pathway that carries blood from the heart to the lungs to pickup oxygen & release carbon dioxide and then returns the blood to the heart
Pulmonary circuit
_________ circuit supply the rest of the body
Systemic circuit
Smallest arteries
Arterioles
Small subdivisions of the arteries
Arterioles
Microscopic vessels through which exchanges take place between the blood & the tissues
Capillaries
Smallest veins
Venules
Vessel that carries blood towards the heart; formed from venues merging
Veins
Which arteries contain oxygen-poor blood?
Pulmonary arteries
Which veins contain oxygen-rich blood?
Pulmonary veins
Circuit pathway that carries blood to all the tissues of the body to deliver oxygen and nutrients and carries waste materials away for disposal
Systemic circuit
The largest artery; carries blood out of the left ventricle
Aorta
______ arteries are blood HIGH in Oxygen
Systemic arteries
_________ veins are blood LOW in oxygen
Systemic veins
_________ arteries are blood LOW in oxygen
Pulmonary arteries
_______ veins are blood HIGH in oxygen
Pulmonary veins
Smooth muscle is thinner in _________
A) Arteries
B) Veins
Veins
3 tunics, but thinner walls; less muscle, less elastic tissue
A) Arteries
B) Veins
Veins
3 tunics; connective tissue layer is thick and elastic
A) Veins
B) Arteries
Arteries
3 tunics; more muscle, less connective tissue & elastic tissue
A) Arterioles
B) Veins
C) Arteries
Arterioles
Single layer; Endothelial only. Thinnest walls.
A) Veins
B) Capillaries
C) Arteries
Capillaries
3 tunics
- Inner endothelium
- Middle smooth muscle
- Outter connective tissue
Links capillaries & veins
Venules
Which vessels have valves that control blood flow?
Veins
______ carry blood to the heart.
Veins
Vessel contraction is controlled by the _____
A) ANS
B) PNS
C) CNS
ANS
_________ have the thinnest walls of any vessels; 1 cell layer
Capillaries
The largest artery
Aorta
The Aorta receives blood from the ______ ventricle.
Left
This sinus receives the most blood from the heart wall
Coronary
Longest section of the aorta spanning the abdominal cavity
Abdominal
Artery that carries oxygenated blood to the liver; part of the celiac trunk
A) Left gastric artery
B) Splenic artery
C) Hepatic artery
Hepatic
The region of the aorta that supplies the branches to the chest wall, esophagus and bronchi
Thoracic
Carries blood to the small intestine; part of the celiac trunk
Superior mesenteric
Artery that supplies the right side of the arm & head; branches into the right subclavian and right carotid arteries
Brachiocephalic
Carries blood to the large intestine; part of the celiac trunk
Inferior mesenteric
How many brachiocephalic arteries are there?
1
Communication between two structures, such as blood vessels
Anastomosis
Longest longest veins of the body; located in the lower extremities
Saphenous
Vein that drains the chest wall and empties into the superior vena cava
Azygos
Large vein that drains the upper part of the body and empties into the hearts right atrium
Superior vena cava
Large vein that drains the lower body and empties into the hearts right atrium
Inferior vena cava
It is the only anatomic location in which an artery travels completely through a venous structure; located on the splenoid bone
Cavernous sinus
Space or hollow; cavity or channel
Sinus
May be involved with the spread of dental or odontogenic infection, which can lead to fatal results
Cavernous sinus thrombosis
Formation of blood clot in a vessel
Thrombosis
Phlebitis contributing to clot formation
Thrombophlebitis
A piece of clot that becomes loose and floats in the blood; can result in pulmonary embolism
Embolus
Movement of solutes from a region where they are in higher concentration to a region where they are in lower concentration
Diffusion
Force exerted by blood against vessel walls & force of propelling blood to the tissues & back to the heart
Blood pressure
Decrease in diameter of blood vessels
Vasoconstriction
Tendency of a solution to draw water into it; directly related to a solutions concentration
Osmotic pressure
Increase in diameter of blood vessels
Vasodilation
Inflammation of vein
Phlebitis
Volume of blood pumped out each ventricle in a minute
Cardiac output
Wave of increased pressure in the vessels produced by heart contractions
Pulse
The fatty plaque buildup in the walls of arteries resulting in cardiovascular disease due to partially blocked artery
Atherosclerosis
Bulging sac in the wall of a vessel
Aneurism
Imadequate blood flow to tissues; can be life-threatening
Shock
Type of shock caused by a decrease in the volume of circulating blood and may follow severe hemmerage or burns
Hypovolemic
Hardening of the arteries
Arteriosclerosis
Leading cause of shock death; pump failure
Cardiogenic
Difficulty in breathing
Dyspnea
Profuse escape of blood from the vessels
Hemorrhage
Lower than normal blood pressure
Hypotension
High blood pressure
Hypertension
Severe allergic reaction
Anaphylactic
Superficial veins that are swollen, distorted, and ineffective
Varicose
3nd most common cause of shock death; results from bacterial infection
Septic
High blood pressure; no apparent medical cause
Essential hypertension