final review Flashcards
how does blood move through capillaries?
osmotic and hydrostatic pressure
why are valves so important?
they keep lymph fluid/blood flowing in one direction
thoracic duct…
- largest lymphatic vessel
- left side (head, neck, trunk)
- receives lipid-rich chyle from GI tract
- drains more than right lymphatic duct
myocardium v. pericardium v. endocardium
myocardium: muscles of the heart, thickest layer of heart wall
endocardium: single cell, lines inner chambers
pericardium: surrounding layer that protects the heart
what type of blood do systemic veins transport?
blood low in oxygen
defective, “sick” red blood cells go through which structure?
the spleen
characteristics of blood type O
universal donor, only can receive from type O, antibodies A + B, no antigen
granulocytes are…
the most common type of WBC found, three types: neutrophil, eosinophil, basophil
what happens if Rh- mom in labor comes in contact with Rh+ blood of fetus/newborn?
risk of potential spontaneous abortion. this can be mitigated with medication if caught during first pregnancy, risk much higher in second.
receiving chambers of the heart
the atrium
P wave in an EKG
atria, depolarization
T wave in an EKG
ventricular, repolarization (starting point)
ST segment in an EKG
initial phase of ventricular repolarization, flat plateau line, no depression or elevation
eosinophils
mucus membrane, found in digestive, lower urinary and respiratory tract, elevated count = parasites
primary lymphoid structures
red bone marrow, thymus
blood pathway
- inferior/superior vena cava
- right atrium
- tricuspid valve opens
- right ventricle opens, tricuspid valve closes
- pulmonary valve opens
- pulmonary artery
- lungs
- pulmonary veins
- empties into left atrium
- bicuspid/mitral valve
- left ventricle
- aortic valve
- aorta
- rest of the body
systemic versus pulmonary circulation
systemic: left side, oxygenated
pulmonary: right side. deoxygenated
continuous versus discontinuous sinusoidal capillaries
continuous: most abundant, space between two cells called intercellular cleft, tight junction of the brain (blood brain barrier BBB)
discontinuous: found in liver, spleen, gap between cells are wider and “very leaky,” incomplete basement membrane
neutrophils
most abundant type of granulocyte, elevated levels = bacterial infection
rhesus factor (blood group D)
- either present or absent on the RBC
- RR, Rr = dominant
- rr = recessive
- Rh+ = present, Rh- = absent
- genetic
how to lymphatic and circulatory systems work in tangent?
the lymphatic systems supports the circulatory system by draining excess fluid and proteins from tissues found in the blood stream, thus preventing tissue swelling
PQ segment in an EKG
atrial plateau
lacteals
lymphatic capillaries found in GI tract
where are sinusoidal capillaries found?
- liver
- spleen
- lymph nodes
- bone marrow
- endocrine hormones (glands)
in which parts of the body will you NOT find arteries?
- epithelium (skin)
- hair
- nails
- tooth enamel
basophils
least abundant granulocyte, secrete histamine and neoprene, blood vessels dilate, inhibit blood clotting
capillary muscles are…
- tendinous cords
- cords rooted in the walls of the heart
- cords attached to valves
- allows blood to flow in one direction
- if flow occurs in 2 direction s- regurgitation
secondary lymphoid organs
- lymph nodes
- spleen
- tonsils
- mucosa-associated lymphoid tissue (MALT)
does blood flow slower or faster in capillaries? why?
slower, the pressure is much lower and there are nutrients and gas exchanges occurring simultaneously
what are the layers of a centrifuge tube?
- RBC
- buffy coat
- plasma
red pulp consists of…
RBC, platelets, macrophage, b-lymphocytes, reticular CT
white pulp consists of…
t+b-lymphocytes
characteristics of blood type AB
- can only donate to AB
- universal recipient
- antigen: A, B
- antibodies: none
- universal plasma donor
characteristics of blood type A
- donate to A, AB
- receive from A and O
- antibodies: B
- antigen: A
platelets
type of thrombocyte, made in bone marrow, stored in spleen (released as needed), not whole cells but are fragments of megakaryocytes, aid in blood clotting
valves of the heart and their functions
- mitral/tricuspid valves - move blood from atria (higher) to ventricles (lower)
- aortic/pulmonary valves - move blood to the lungs and the rest of the body
electrical impulse to heart pathway
- SA node
- AV node
- AV bundle (bundle of His)
- bundle branches off into left and right
- purkinje fibers
- contraction
cross sections of blood vessels
tunica media - thicker in artery than in vein
tunica externa - thicker in vein than in artery
characteristics of blood type B
donate to B, AB
receive from B, O
antigen: B
antibodies: A
characteristics of thymus
- where lymphocyte maturation occurs
- located in mediastinum
- contains 2 thymic lobes
- larger in children than adults
- stops developing after puberty
- slowly decreases and is eventually replaced by adipose tissue
right lymphatic duct
right side, drains upper right quadrant
thrombocytes versus thymocytes
thrombocytes are essential in blood clotting, thymocytes regulate thymic cell growth
types of pathogens
bacteria, fungi, virus, protozoans
innate immunity
present at birth, protects against nonspecific substance, responds immediately, no memory needed
normal rate of breaths per minute
12-20
natural killer (NK) cells
nonspecific internal defense cells, destroy unhealthy/unwanted cells through apoptosis (cytotoxic chemical release) preform immune surveillance
complement system
activated by infection, function to destroy extracellular pathogens, marker to indicate presence of pathogen
acute inflammation lasts for…
8-10 days (240 hours)