Intro toCardiovascular and Lymphatic Systems Flashcards
What are the 3 types of blood vessels?
Arteries
Veins
Capillaries
What is the name of small veins and small arteries?
Arterioles
Venules
What are the three layers of blood vessel tissue and the tissue names? Superficial to deep
Tunica externa: areolar, sometimes elastic CT
Tunica Media: smooth muscle
Tunica intima/interna: simple squamous epithelium or endothelium
Which layer of the artery is thicker than the veins?
Tunica Media (smooth muscle)
What tissue is the vein’s valves made up of? And what strengthens it?
Tunica media
Collagen and elastic fibers
What is the function of the valves in veins?
Prevents backflow and possible pooling
What are superficial veins?
Close to skin surface.
What are deep veins?
Accompany arteries and are usually paired with another vein.
What are capillaries composed of?
Simple squamous epithelium. Endothelium.
Capillary function?
Diffuses gases, other small molecules like nutrients and waste
What is the middle or canal portion of the veins and arteries?
Lumen
What are the structures that connect the cells of the cardiac muscle?
Intercalated disks
What are the cell connectors that the intercalated disks contain?
Gap junctions
The heart does not need an outside signal to beat. It is _________.
Autorythmic
What is the portion of the circulatory system whose arteries transport blood to the lungs for oxygenation and whose veins transport oxygenated blood back to the heart?
Pulmonary circulation
What is the portion of the circulatory system whose arteries transport blood to the body, where oxygen is supplied the tissues and veins return blood to the heart?
Systemic circulation
The capillary bed is where gas _______ happens.
Exchange
What is the blood circulation of a baby in the womb called?
Fetal circulation
What organ provides oxygen to the baby in the womb?
The placenta
What is the blood vessel that returns blood from the placenta to the heart?
Umbilical vein
What is the name of the non-living matrix of the blood?
Plasma
What is the name of the white blood cells? Function?
Leukocytes
Defense
What is the name of the red blood cells? Function?
Erythrocytes
Transport of oxygen and CO 2
What is the name of the smaller fragments of cells? Function?
The (platelets)
Blood clotting
What does the lymphatic system flow alongside?
The circulatory system
Lymphatic system functions
Drain excess tissue fluid
Defense response
Provide alternate highway for fluid to travel
(Instead of arteries and veins)
What is lymph?
Interstatial fluid once it is in the lymphatic vessel
What are the names of the two directional vessels?
Afferent (several vessels) and Efferent (1 vessel)
What is the function of afferent lymphatic vessels?
Brings lymph to nodes
What is the function of efferent lymphatic vessels?
Drains lymph from nodes
