Final Exam Review Flashcards
Which photoreceptors are responsible for color vision?
cones
Put this in the correct sequence of events occurring in the rhodopsin cycle of the eye.
- Retinal within rhodopsin changes shape
- Retinal detaches from opsin
- Light activates rhodopsin
- Activated rhodopsin results in vision
3,1,4,2
The intrinsic muscle of the ciliary body help to?
regulate the shape of the lens
Which structure focuses light onto the fovea centralis?
lens
The transparent part of the fibrous tunis is the?
cornea
What is the function of the lacrimal glands?
to secrete tears
Which inner ear structure detects rotational movement of the head?
semicircular canals
Myopia is also known as?
nearsightedness
The first leukocytes to arrive at the site of an infection are?
neutrophils
Which ion is found in the center of the heme molecule of hemoglobin?
Fe2+ (iron)
What is the stem cell producing all formed elements?
hemocytoblast
In the hemolytic disease of the newborn, the problem usually arises when the mother is _______ and the fetus is _______.
Rh factor negative, Rh factor positive
A drifting blood clot is called a/an?
embolus
A persons blood type is determined by the?
presence or absence of surface antigens on the cell membrane of RBCs
All of the following are plasma proteins EXCEPT?
a. fibrinogen
b. collagen
c. albumin
d. globulin
b. collagen
A hemoglobin is composed of?
four protein chains and four heme groups
True or False:
Plasma comprises 45% of whole blood.
false
True or False:
A platelet plug is formed during the coagulation phase of hemostasis.
false
True or False:
Erythrocytes can transport CO2.
True
True or False:
The universal donor for a blood transfusion is type AB blood.
False
The pacemaker of the heart is?
sinoatrial node
Frank-Starling’s Law/Principle of cardiac function refers to?
- increased stretch of the ventricles produces a greater force of contraction
- more blood in generates more blood out
- perload
The contraction phase of the cardiac cycle is called?
systole
The plateau phase of the cardiac action potential result from?
opening of Ca2+ channels
The goal of the cardiovascular system is?
to maintain adequate blood flow to all tissues
End-systolic volume is?
amount of blood remaining in the ventricle when the semilunar valve closes
All of the following describe cardiac muscle EXCEPT:
- uninucleate
- branch-shaped
- intercalated disk
- involuntary control
- nonstriated
- nonstriated
On the EKG, the QRS complex represents?
ventricular depolarization
Which sequence represents an action potential moving through the intrinsic conduction system?
sinoatrial node > atrioventricular node > bundle of his > bundle branches > purkinje fiber
When the heart rate is greater than 100 bpm, this is known as
tachycardia
Which structure supply blood to the heart?
coronary arteries
Which specific valve is located between the left atrium and the left ventricle?
bicuspid valve or mitral valve
Arteriosclerosis is an age-related change resulting from?
loss of elasticity in the arterial wall
Because blood pressure is greater, ______ will occur at the arterial side of the capillaries?
filtration
BP=100/80
MAP=
90
Which of the following is NOT an action of angiotensin II to increase the blood pressure?
- stimulating vasoconstriction
- stimulating release of aldosterone
- stimulating release of antidiuretic hormone
- stimulating thirst
- stimulating release of atrial natriuretic peptide
- stimulating release of atrial natriuretic peptide
Angiotensinogen __________> angiotensin I
renin
Angiotensin I ____________> Angiotensin II
ACE
Which factor will cause an increase in blood pressure?
- an increase in blood viscosity
- an increase in peripheral resistance
- an increase in blood volume
- all of the above
- a and c only
- all of the above
Antidiuretic hormone is released from the _______ in response to a decrease in blood pressure.
posterior pituitary gland
Changes in blood pressure are monitored by?
baroreceptors
___________ is the difference between the systolic and diastolic pressures.
Pulse pressure
Which layer of a blood vessel wall contains smooth muscle to regulate the diameter of the lumen?
tunica media
Muscular arteries, which are medium sized arteries that regulate blood flow to the organs are also called?
distributing arteries
True or False:
Blood flows from an area of high pressure to an area of low pressure.
True
True or False:
Arterioles are the actual sites of exchange of gases and nutrients between the blood and tissues/
False
True or False:
Because the left ventricle is larger, it ejects more blood during each heart beat.
False
True or False:
The intrinsic conduction system of the heart is composed of specialized nervous tissue.
False
True or False:
Resistance is the measure of the force that the blood exerts against the wall of a blood vessel.
False
True or False:
The malleus is the auditory ossicle that is attached to the tympanic membrane.
True
True or False:
The organ of Corti is the receptor site in the inner ear for linear acceleration.
False
Names the colors photoreceptors can be.
Green cone, red cone, blue cone
Which structure equalizes pressure in the middle ear cavity to the external air pressure?
Eustachian tube
Which of the following is NOT a function of the spleen? defense blood reservoir site of t cell maturation destruction of abnormal red blood cells
site of t cell maturation
What is lymph?
fluid collected from tissues
Which of the following is not a sign of inflammation? swelling redness numbness heat pain
numbness
Plasma cells secrete?
antibodies & immunoglobulins
The right lymphatic duct drains lymph from?
right upper limb
right thorax
right head
right neck