BIOS 255 EXAM 2 FINAL PAPER SOLVED QUESTIONS COMPLETE ANSWERS BUNDLED RESOURCE

BIOS 255 EXAM 2 FINAL PAPER SOLVED
QUESTIONS COMPLETE ANSWERS
BUNDLED RESOURCE

●● Right AV valve has____
Answer: three cusps (TRIcuspid valve)


●● Left AV valve has____
Answer: two cusps (BIcuspid)


●● Left AV valve also called
Answer: biscupid valve or mitral valve


●● Right AV valve also called
Answer: Tricuspid valve


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


●● Exercise makes the heart____
Answer: work harder which increases cardiac output

,●● At the beginning of exercise______in the muscles & joints send
signals to the cardiac centers
Answer: proprioceptors


●● Sympathetic output from the cardiac centers then _____ cardiac
output
Answer: increases


●● As exercise progresses, muscular activity ______ venous return
Answer: increases


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


●● Sustained exercise causes
Answer: hypertrophy


●● Blood vessels further from the heart
Answer: lowest BP


●● Blood vessels closest to heart

, Answer: highest BP


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


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


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


●● Capillaries only consist of______and______
Answer: Basement membrane; endothelium layer


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


●● Tunica media will be thicker in arteries than veins because