Exam #2 Flashcards by Hannah Brahm

Order starting with veins in blood flow?

Veins
Heart
Arteries
Arterioles
Capillaries
Venules
Veins

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Vessle wall layers?

Tunica externa
Tunica media
Tunics intima

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VEINS

Tunica externa function?

Thicker than arteries. Prevents collapse of blood vessles

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VEINS

Vasa vasorum function

Provides nutrition

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VEIN

Function of tunica media?

Smooth muscle

changes vessle diameter

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VEIN

Tunica intima function

Flat epithelial cells allow fluid to flow smoothly

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VEINS

Lumen function?

Hollow space to allow for blood flow

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ARTERY

Lumen function?

Hollow space for blood flow

Smaller in arteries than veins to maintain blood pressure

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ARTERY

Tunica media function?

Contains smooth muscle to provide support and change vessle diameter to regulate blood pressure

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ARTERY

Tunica intima function?

Contains elastic to provide flexibility

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ARTERY

Tunica externa function ?

Composed of connective fibers anchors vessels to surrounding tissues.

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Arterioles contain?

Smooth muscle to dilate and constrict

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What part of contraction is systolic pressure?

Peak contraction

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What part of contraction is dystolic pressure?

During relaxation

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What type of junctions are in continuous capillaries?

Tight junctions

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Function of arterial venous shunt?

Bipasses capillary bed from arterioles to venules

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Arteries are what kind of reservoir?

Pressure reservoir

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Veins are what kind of reservoir?

Blood reservoir

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How does blood flow upwards in veins?

Contraction of skeletal muscle
Venous valves
Thorasic pressure cavity

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Fenestrated capillaries have what type of junctions?

Tight junctions

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What kind of junctions do sinusoid capillaries have?

Tight junctions

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What is anastomosis?

Connections among vessles

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What is the cardiac output equation?

F= change in pressure
—————————
Resistance

Bigger number on bottom means increases resistance

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What is pulse pressure?

Systolic- dystolic

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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