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BIOS 255 Exam 2 Questions With 100% Correct Answers

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BIOS 255 Exam 2 Questions With 100% Correct Answers Valves ensure______ One-way flow of blood through the heart Right AV valve has____ three cusps (TRIcuspid valve) Left AV valve has____ two cusps (BIcuspid) Left AV valve also called biscupid valve or mitral valve Right AV ...

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  • June 21, 2024
  • 12
  • 2023/2024
  • Exam (elaborations)
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BIOS 255 Exam 2 Questions With 100%
Correct Answers
Valves ensure______
One-way flow of blood through the heart


Right AV valve has____
three cusps (TRIcuspid valve)


Left AV valve has____
two cusps (BIcuspid)


Left AV valve also called
biscupid valve or mitral valve


Right AV valve also called
Tricuspid valve


Cardiac Output (CO)
The amount of blood ejected by each ventricle in 1 minute


Exercise makes the heart____
work harder which increases cardiac output


At the beginning of exercise______in the muscles & joints send signals to the cardiac centers
proprioceptors


Sympathetic output from the cardiac centers then _____ cardiac output
increases


As exercise progresses, muscular activity ______ venous return
increases


The preload increases on the right ventricle and then the left ventricle as more blood flows through
the _______
Pulmonary circuit and reaches the left heart


Sustained exercise causes
hypertrophy


Blood vessels further from the heart
lowest BP


Blood vessels closest to heart

, highest BP


Tunica Interna (Tunica)
Innermost; consists of a layer of simple squamous epithelium called endothelium.
Bound to a supendothelial layer of areolar connective tissue


Tunica Media
Middle; consists primarily of smooth muscle with a framework of elastic connective tissue and
contains collagen.
Thickest layer


Tunica Externa (Adventitia)
Outermost; consists of areolar connective tissue with elastice and collagen fibers


Capillaries only consist of______and______
Basement membrane; endothelium layer


Veins and venules are the only blood vessels that contain
Valves to prevent back flow


Tunica media will be thicker in arteries than veins because
They will need to supply more pressure to the blood


Smallest artery is an
Arteriole


Smallest vein is a
Venule


Elastic arteries
Tunica media composed of smooth muscle and elastic connective tissue
Largest of arteries
Found closest to the heart
Elastic needed to withstand blood being ejected from heart


Muscular Arteries
Tunica media composed of smooth muscle
Second largest artery
Found far from heart
Smooth muscle needed for vasoconstriction and vasodilation


Continuous Capillaries
Completely encricle a lumen, surrounded by a complete basement membrane
Found in skin and muscle

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