Exam #2 Flashcards
Order starting with veins in blood flow?
Veins Heart Arteries Arterioles Capillaries Venules Veins
Vessle wall layers?
Tunica externa
Tunica media
Tunics intima
VEINS
Tunica externa function?
Thicker than arteries. Prevents collapse of blood vessles
VEINS
Vasa vasorum function
Provides nutrition
VEIN
Function of tunica media?
Smooth muscle
changes vessle diameter
VEIN
Tunica intima function
Flat epithelial cells allow fluid to flow smoothly
VEINS
Lumen function?
Hollow space to allow for blood flow
ARTERY
Lumen function?
Hollow space for blood flow
Smaller in arteries than veins to maintain blood pressure
ARTERY
Tunica media function?
Contains smooth muscle to provide support and change vessle diameter to regulate blood pressure
ARTERY
Tunica intima function?
Contains elastic to provide flexibility
ARTERY
Tunica externa function ?
Composed of connective fibers anchors vessels to surrounding tissues.
Arterioles contain?
Smooth muscle to dilate and constrict
What part of contraction is systolic pressure?
Peak contraction
What part of contraction is dystolic pressure?
During relaxation
What type of junctions are in continuous capillaries?
Tight junctions
Function of arterial venous shunt?
Bipasses capillary bed from arterioles to venules
Arteries are what kind of reservoir?
Pressure reservoir
Veins are what kind of reservoir?
Blood reservoir
How does blood flow upwards in veins?
Contraction of skeletal muscle
Venous valves
Thorasic pressure cavity
Fenestrated capillaries have what type of junctions?
Tight junctions
What kind of junctions do sinusoid capillaries have?
Tight junctions
What is anastomosis?
Connections among vessles
What is the cardiac output equation?
F= change in pressure
—————————
Resistance
Bigger number on bottom means increases resistance
What is pulse pressure?
Systolic- dystolic
Equasion to calculate arterial pressure?
MAP= diastolic + 1/3(pulse pressure)
Mean Arterial Pressure
Posterior intraventricular artery runs to?
The apex
The right marginal artery supplies blood to?
Right side of myocardium
The circumflex coronary artery supplies blood to?
Intraventricular septum and anterior walls of ventricles
Anterior intraventrucular artery supplies?
L atrium and posterior walls of L ventricle
Second heart sound is caused by?
Closure of semi lunar valves
Cardiac output is?
The amount of blood pumped by each ventricle in one minute
Stroke volume is?
The volume of blood pumped by one ventricle with each heartbeat
Opening if lymphatic filaments is dependent on what?
Pressure from lymphatic fluid
What is fiberous pericardium?
Loosely fitting superficial part of the sac enclosing the heart
The epicardium is also called the?
Visceral layer
Glistening white sheet of endothelium lining the inside if the heart is?
Endocardium
The lining of the heart chambers is called the?
Endocardium
Thin, slippery, two-layered membrane is the?
Serous pericardium
Which valve is most often faulty?
Mitral valve
Condition when valve flaps become stiff and constrict opening is called?
Stenosis
Two types of lymphocytes are?
T-cells and B-cells
Function of t cells?
Manage immune response
Attack and destroy infected cells
Function of B cells?
Producing plasma, daughter cells that that secrete antibodies into blood or other bodily fluids
Baroreceptors are related to?
They communicate with?
Pressure
Brain
Chemoreceptors relate to?
They communicate with?
Chemicals
Brain
Cardiac output equation?
CO = HR x (SV)
Cardiac output
Heart rate
Stroke volume
Function of colloid osmotic pressure?
“Pulls” fluid out
What is hydrostatic pressure?
Pressure of fluid
How to find net filtration pressure?
NFP = (HPc + OPif) - (HPif + HPc)
Add everything going to the right
Minus
Add everything to the left
Wgat lymphatic vessel collects interstitial fluid?
Lymphatic capillary
What lymphatic structures trap bacteria in thr posterior oral cavity?
Palatine tonsils
Spleens white blood vessles msinly composed of?
Lymphocytes
Sequence of flow through lymphatic system?
Capillaries —> vessels —> trunks —> ducts
Thoracic duct function?
Drains lymph from entire left side of body
Where do T cells develop?
Thymus
What filters lymph?
Lymph nodes
What vessles transport interstitial fluid back to blood?
Lymphatics
Lymphangitis presents itself as?
Red lines under the skin that are sensitive to touch.
What enlarges when B lymphocytes are dividing rapidly?
Germinal centers
Criss crossing reticular fibers are called?
Lymph sinuses
First node that recieves drainage from a body area suspected of cancer is?
A sentinel node
