Exam 1 quiz
Circulatory System Quiz
Test your knowledge of the circulatory system with this comprehensive quiz. Featuring 55 questions, it covers key concepts in cardiovascular physiology, blood composition, and heart fun
Enhance your understanding with:
- Multiple choice questions
- Insights into blood pressure and flow
- Information on blood cells and their fun
ctions
Which part of the circulatory system holds the largest amount of blood
Systemic veins
Pulmonary arteries
Systemic arteries
Pulmonary veins
Blood colloid osmotic pressure is largely due to
The high amount of water in the blood, and it promotes diffusion out of the capillaries
The proteins in the blood, and it promotes filtration
The pressure generated by the heart, and it favors osmosis into the arteriole end of the capillary tissue
The high amount of water in the blood, and it promotes filtration from arterioles
The proteins in the blood, and it promotes reabsorption
Net filtration pressure is equal to the
Colloid osmotic pressure in the blood divided by resistance in the tissue
Net hydrostatic pressure minus the net colloid osmotic pressure
Blood hydrostatic pressure minus the tissue hydrostatic pressure
Blood pressure times the total peripheral resistance
Which statement is accurate
Filtration dominates at the material end of a capillary bed, and is driven by osmotic pressure
Filtration dominates at the arterial end of a capillary bed, and is driven by hydrostatic pressure
Filtration dominates at the venous end of a capillary bed, and is driven by hydrostatic pressure
Filtration dominates at the venous end of a capillary bed, and is driven by osmotic pressure
The _________ is composed of circular arranged layers of smooth muscle cells
Tunica interna
Tunica intima
Tunica externa
Tunica media
None of these
Gas, nutrients, and waste exchange occur between the ______ and the tissues of the body
Arteries
Capillaries
Capillaries and veins
Veins
Renin converts
Angiotensin II to angiotensin I
Angiotensinogen to angiotensin I
Angiotensin I to antiotensin II
Antidiuretic hormone to angiotensin
Aldosterone and atrial natriuretic peptide have ____ effects on blood pressure
Similar
Opposite
The term "epicardium" is another name for the
Visceral layer of the serial pericardium
Myocardium
Mediastinum
Parietal layer of the serial pericardium
External layer of the fibrous pericardium
Which action leads to the closure of the right atrioventricular valve
Contraction of the left atrium
Contraction of the right ventricle
Contraction of the right atrium
Relaxation of the right ventricle
Relaxation of the left atrium
Who has a higher resting cardiac output
All have the same cardiac output
Super lazy person
Star athlete
The units for perfusion of blood are typically
Grams per minute
Liters per gram
Beats per minute per gram
Milliliters per minute per gram
Milliliters per hour per gram
In an EKG, the P wave is generated when the
Ventricles depolarize
Perkinje fibers initiate an impulse
Ventricles depolarize
Atria depolarize
Atria repolarize
Which heart chambers contain deoxygenated blood
Left ventricle and right ventricle
Left atrium and right atrium
Right ventricle and right atrium
Right atrium and left ventricle
As blood is pumped out of the heart into the major arteries leaving the heart, it
Pushes against the semilunar valves and opens them
Pushes against the semilunar valves and closes them
Fills the cups of the semilunar valves, closing them
Fills the cups of the semilunar valves, opening them
The life span of an erythrocyte is about _____ days
10
30
60
120
240
The reason its more appropriate to call an erythrocyte a "formed element" rather than a cell is because
Lack of nucleus and organelles
Are not red
Have lots of inclusion molecules
Are actually dead
A malnourished person might have abnormally low levels of plasma proteins, as a result colloid osmotic pressure
Decreases, and so blood volume is abnormally high
Increases, and there is fluid retention in the interstitial area
Increases, and so blood volume is abnormally high
Decreases, and there is fluid retention in the interstitial place
Which are the most numerous of the leukocytes
Basophils
Neutrophils
Eosinophils
Monocytes
Which is the most common type of capillary
Continuous
Fenestrated
Venules
Sinusoids
Valves in veins
Cause venous blood flow to go in only one direction
Are found only in the largest veins
Are formed of the tunica media
Are the leading cause of high blood pressure
The function of the auditory ossicles is to
Detect acceleration of the head
Support the tympanic membrane
Amplify sound waves and transmit them to the inner ear
Determine static head position
Where do the olfactory receptor cells synapse
Thalamus
Olfactory bulbs
Olfactory epithelium
Hypothalamus
The most numerous of the formed elements are the
Neutrophils
Platelets
Basophils
Erythrocytes
The clinical definition of the hematocrit refers to the percentage of
Leucocytes in the blood
Erythrocytes in the blood
Plasma in the blood
Platelets in the blood
All formed elements in the blood
As an arterial pathway moves farther from the heart, the arteries
Show no change in their lumen size
Get larger
Get smaller
Which is the most common type of capillary
Continuous
Sinusoid
Common
True
Oxygen poor blood is
Dark red
Light red
Light blue
Dark blue
Which is going to result in significant agglutination
Donor A, recipient AB
Donor B, recipient has antibody anti-A
Donor O, recipient O
Donor AB, recipient is B
Donor A, recipient has antibody anti-B
The greatest concentration of cones is located in the
Fovea centralis
Posterior retina
Optic nerve
Optic disc
The flavor of food depends on
Olfaction
Gustation
Both
Neither
Which test sensation is mismatched
Salty: metal ions
Bitter: acids
Sour: hydrogen ions
Umami: amino acids
What are the cell-to-cell contacts of the cardiac muscle fibers called
Sarcoplasmic reticulum
T-tubules
Intercalated discs
Cardiac discs
The foramen oval of the fetal heart is an opening in the
Interatrial septum
Interventricular septum
Fossa ovalis
Aorticopulmonary septum
When blood is centrifuged and its components separate, the bottom of the tube holds the
Plasma
Waste products
Erythrocytes
Buffy coat
Monocytes
Platelets
The main function of leukocytes is to
Trigger allergies
Defend against pathogens
Form clots
Carry oxygen through the blood
An ear infection is in which part of the ear
Outer
Inner
Middle
Where does sound travel immediately after it leaves the auditory ossicles
Round window
Oval window
Tympanic membrane
Circular organ
The greatest concentration of cones is in the
Fovea centralis
Retina
Pupil
Optic nerve
Dynamic equilibrium is located in the
Middle ear
Vestibule
Semi-circular canals
Cochlea
The structure that functions as a diaphragm to control pupil size is the
Ora serrata
Iris
Cornea
Suspensory ligament
Sodium, calcium, and bicarbonate are all described as plasma
Electrolytes
Proteins
Nutrients
Solvents
The type of leukocyte that is very active during a bacterial infection is a(n)
Monocyte
Basophil
Neutrophil
Eosinophil
Lymphocyte
If someone were to have abnormally low levels of protein in their blood, then net filtration pressure would
Be higher than normal
Be lower than normal
If someone suffered from hypertension, such that the blood pressure in their capillaries was elevated, then net filtration pressure would be
Below normal
Above normal
Blood pressure is lowest in
Venues
Capillaries
Veins
Arterioles
The viscosity of blood is ______ proportional to the number of erythrocytes and _____ proportional to the amount of fluid
Directly, indirectly
Indirectly, directly
Directly, directly
Indirectly, indirectly
Typically, an adults body contains ___ liters of blood
3
24
5
17
The stereocilia of cochlear hair cells project into the
Spiral ganglion
Tectorial membrane
Basilar membrane
Otolithic membrane
During ventricular contraction
Only the AV valves open
The semilunar valves close and AV valves open
The semilunar valves open and the AV close
Only the semilunar valves close
Only the AV valves close
Where does the signal from a light impulse go after it leave the optic chiasm?
Optic nerve
Retina
Optic radiation
Optic tract
The stereocilia responsible for static equilibrium project into the
Otolithic membrane
Basilar membrane
Tectorial membrane
Spiral ganglion
Cardiac output equals the
Stroke volume divided by heart rate
Blood pressure times heart rate
Heart rate times stroke volume
Cardiac reserve minus stroke volume
The layer of the heart wall composed of cardiac muscle tissue is the
Endocardium
Pericardium
Myocardium
Pericardial cavity
Pectinate muscle
The heart valves
Direct the conduction impulse through the heart muscle
Are only used in the fetal heart
Permits the passage of blood in one direction
Permits the passage of blood in any direction
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