Vocab
origin of heartbeat, structure where electrical signal begins
Sinoatrial node
Able to cross the placenta and produce immunity to newborn
IgG
AV valves close
What is an example of a mechanical barrier to pathogens?
Skin, hair, mucous
What branch of the aorta is paired?
Suprarenal
Portion of EKG that represents atrial depolarization
P Wave
Primary Component of allergic response
IgE
What action occurs when pressure in the aorta is greater than pressure in left ventricle?
Aortic valve closes
Cytotoxic T cells form which other type of immune cell
Memory T cells
Term describing movement of molecules across a membrane due to differences in concentration
Diffusion
Structures in aortic arch and carotid arteries that respond to changes in pressure
Baroreceptors
Component of exocrine secretions
IgA
Tunica externa
Bone marrow
What vessel receives blood from the intercostal veins and in the thorax and empty into the subclavian vein?
Type of lymphocyte that secretes performs as a nonspecific defense
NK Cell
Used in B cell activation
IgD
Capillares would be least permeable in what organ?
Brain
List the correct sequence of structures from flow of lymph: (ONE MAY REPEAT)
vessels, capillaries, nodes, ducts, trunks
Capillaries, vessels, nodes, vessels, trunks, ducts
What is a risk factor for coronary artery disease?
Diabetes, smoking, hypertension
Term for markers on surfaces of cells used to determine self from non self
antigens
Anti-A and Anti-B antibodies are this type
IgM
List four differences between arteries and veins
Arteries are high pressure, lumen bigger in veins, tunica media smaller in veins, veins act as blood reservoir
What are four lifespan changes on lymphatic system?
Inc risk of infection, inc cancer risk, dec antibody responses, vaccines less effective, thymus dec in size
Trace a droplet of blood through the heart - all valves
Vena Cava, right atrium through tricuspid to right ventricle, through pulmonary valve to pulmonary trunk, to pulmonary arteries, lungs, pulmonary veins, left atrium through mitral/bicupsid, left ventricle, aortic valve, aorta, body