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BIOLOGY 130
WEEK TWO QUIZ
25
Biology
08/26/2009

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Term
WHAT IS THE PRIMARY FUNCTION OF LOCAL OR INTRINSIC CARDIOVASCULAR CONTROL MECHANISMS?
1. ALTER LOCAL BLOOD FLOW ACCORDING TO TISSUE NEEDS
2. MAINTAIN A BASAL LEVEL OF SYSTEMIC VASCULAR TONE
3. ALTER THE RATE OF CARDIAC CONTRACTION
Definition
ALTER LOCAL BLOOD FLOW ACCORDING TO TISSUE NEEDS
Term
CENTRAL CONTROL OF VASOMOTOR TONE (INCLUDING BOTH NEURAL INNERVATION AND HUMORAL FACTORS) IS MAINLY THROUGH ACTION ON THE MUSCULATURE OF WHICH OF THE FOLLOWING?
1. ARTERIOLES (RESISTANCE VESSELS)
2. VEINS (CAPACITANCE VESSELS)
3. MICROCIRCULATION (EXCHANGE VESSELS)
Definition
1. ARTERIOLES (RESISTANCE VESSELS)
2. VEINS (CAPACITANCE VESSELS)
Term
VARIATIONS IN BLOOD FLOW IN THE CORONARY ARTERIES OF THE HEART ARE GOVERNED PRIMARILY BY WHICH OF THE FOLLOWING?
1. LOCAL METABOLITE CONTROL
2. LOCAL MYOGENIC CONTROL MECHANISMS
3. CENTRAL NEURAL INNERVATIONS
Definition
1. LOCAL METABOLITE CONTROL
2. LOCAL MYOGENIC CONTROL MECHANISMS
Term
WHICH OF THE FOLLOWING IS TRUE OF THE FORCE AGAINST WHICH LEFT VENTRICLE MUST PUMP?
1. REFERRED TO AS THE LEFT VENTRIULAR AFTERLOAD
2. EQUIVALENT TO SYSTEMIC VASCULAR RESISTANCE
3. HELPS TO DETERMINE LEFT VENTRICULAR STROKE VOLUME
Definition
1. REFERRED TO AS THE LEFT VENTRIULAR AFTERLOAD
2. EQUIVALENT TO SYSTEMIC VASCULAR RESISTANCE
3. HELPS TO DETERMINE LEFT VENTRICULAR STROKE VOLUME
Term
WHICH OF THE FOLLOWING FACTORS DETERMINE CARDIAC STROKE VOLUME?
1. VENTRICULAR PRELOAD
2. VENTRICULAR AFTERLOAD
3. VENTRICULAR CONTRACTILITY
Definition
1. VENTRICULAR PRELOAD
2. VENTRICULAR AFTERLOAD
3. VENTRICULAR CONTRACTILITY
Term
SIGNIFICANT LOSS OF BLOOD VOLUME CAUSES INCREASE IN WHICH OF THE FOLLOWING?
1. VASCULAR TONE
2. SECRETIONS OF ANTIDIURETIC HORMONE (ADH)
3. HEART RATE
Definition
1. VASCULAR TONE
2. SECRETIONS OF ANTIDIURETIC HORMONE (ADH)
3. HEART RATE
Term
DURING THE LATTER STAGES OF VENTRICULAR RELAXATION, THE PRESSURES IN THEIR CHAMBERS DROP BELOW THOSE OF THE ATRIA. THIS RESULTS IN WHICH OF THE FOLLOWING?
1. OPENING OF THE AV VALVES
2. RAPID VENTRICULAR FILLING
3. A RAPID DROP IN ATRIAL PRESSURES
Definition
1. OPENING OF THE AV VALVES
2. RAPID VENTRICULAR FILLING
3. A RAPID DROP IN ATRIAL PRESSURES
Term
CARDIAC MUSCLE CONTRACTION IS THE RESULT OF WHICH OF THE FOLLOWING IONIC MECHANISMS?
A. DEPOLARIZATION
B. POLARIZATION
C. REPOLARIZATION
D. REFRACTORY PERIOD
Definition
A. DEPOLARIZATION
Term
ALL OF THE FOLLOWING ARE PARTS OF THE CARDIAC CONDUCTION SYSTEM EXCEPT:
A. BUNDLE OF HIS
B. CHORDAE TENDINEAE
C. SINOATRIAL NODE
D. PURKINJE FIBERS
Definition
B. CHORDAE TENDINEAE
Term
THE SYSTEMIC ARTERIOLES REGULATE BLOOD FLOW THROUGH DIFFERENT AREAS OF THE BODY BY WHICH OF THE FOLLOWING MECHANISMS?
A. CONSTRICTING OR RELAXING THE ARTERIOLE WALLS
B. CLOSING OR OPENING OF ARTERIOLE SPINCTER MUSCLES
C. VALVES IN THE LUMEN OF THE VESSEL
D. SKELETAL MUSCLE CONTRACTING THE ARTERIOLES
Definition
A. CONSTRICTING OR RELAXING THE ARTERIOLE WALLS
Term
ILIAC VESSELS WOULD BE FOUND IN THE _____.
A. NECK AREA
B. PECTORAL AREA
C. PELVIC AREA
D. FEET
Definition
C. PELVIC AREA
Term
WHICH OF THE FOLLOWING ECG SEGMENTS REPRESENTS DEPOLARIZATION OF THE VENTRICLES?
A. THE ST SEGMENT
B. THE P WAVE
C. THE PR INTERVAL
D. THE QRS WAVE/ COMPLEX
Definition
D. THE QRS WAVE/ COMPLEX
Term
CENTRAL OR EXTRINSIC CONTROL OF THE CARDIOVASCULAR SYSTEM OCCURS THROUGH THE ACTION OF WHICH OF THE FOLLOWING 1. AUTONOMIC NERVOUS SYSTEM
2. CIRCULATING HUMORAL AGENTS
3. LOCAL METABOLITES
Definition
AUTONOMIC NERVOUS SYSTEM AND CIRCULATING HUMORAL AGENTS
Term
WHICH OF THE FOLLOWING INFLUENCES BLOOD RETURN THROUGH THE VENOUS CIRCULATION INTO THE RIGHT ATRIUM?
A. CLOSING OR RELAXING THE ARTERIOLE WALLS
B. CLOSING OR OPENING OF THE ARTERIOLE SPHINTER MUSCLES
C. THE INCREASE IN NEGATIVE PLUERAL PRESSURE DURING INSPIRATION
D. CAPILLARY DILATION
Definition
C. THE INCREASE IN NEGATIVE PLUERAL PRESSURE DURING INSPIRATION
Term
WHICH OF THE FOLLOWING TYPES OF BLOOD VESSELS RE CONSIDERED "RESISTANCE VESSELS"?
A. SMALL ARTERIES AND ARTERIOLES
B. VEINS
C. LARGE ARTERIES
D. CAPILLARIES
Definition
A. SMALL ARTERIES AND ARTERIOLES
Term
THE SYSTOLIC/ DIASTOLIC ARTERIAL BLOOD PRESSURE OF A NORMAL ADULT MALE IS ABOUT ________.
A. 150/90
B. 120/70
C. 90/150
D. 70/120
Definition
B. 120/70
Term
VARIATIONS IN BLOOD FLOW TO THE BRAIN ARE GOVERNED PRIMARILY BY WHICH OF THE FOLLOWING?
A. CENTRAL NEURAL INNERVATION
B. LOCAL MYOGENIC CONTROL MECHANISMS
C. CIRCULATION OF HUMORAL AGENTS
D. LOCAL METABOLIC CONTROL
Definition
D. LOCAL METABOLIC CONTROL
Term
WHICH PORTION OF THE NERVOUS SYSTEM IS MAINLY RESPONSIBLE FOR THE CENTRAL CONTROL OF BLOOD FLOW?
A. SOMATIC (VOLUNTARY) NERVOUS SYSTEM
B. HIGHER BRAIN CENTERS
C. PARASYMPATHETIC NERVOUS SYSTEMS
D. SYMPATHETIC NERVOUS SYSTEM
Definition
D. SYMPATHETIC NERVOUS SYSTEM
Term
WHICH OF THE FOLLOWING FORMULAS IS USED TO CALCULATE THE TOTAL AMOUNT OF BLOOD PUMPED BY THE HEART PER MINUTE, OR CARDIAC OUTPUT?
A. STROKE VOLUME(SV) DIVIDED BY RATE (F)
B. BLOOD PRESSURE (BP) X SV
C. SV X VASCULAR RESISTANCE
D. RATE (F)X SV
Definition
D. RATE (F)X SV
Term
WHAT IS THE APPROXIMATE NORMAL RESTING CARDIAC OUTPUT FOR A HEALTHY ADULT?
A. 500 ML/MIN
B. 75 ML/MIN
C. 50 L/MIN
D. 5000 ML/MIN
Definition
D. 5000 ML/MIN
Term
CHANGE IN THE RATE OF CARDIAC CONTRACTIONS ARE AFFECTED PRIMARILY BY CHANGES IN WHICH OF THE FOLLOWING?
A. SYMPATHETIC OR PARASYMPATHETIC TONE
B. VENTRICULAR PRELOAD
C. VENTRICULAR AFTERLOAD
D. VENTRICULAR CONTRACTILITY
Definition
A. SYMPATHETIC OR PARASYMPATHETIC TONE
Term
WHERE ARE THE CENTRAL CENTERS RESPONSIBLE FOR REGULATING THE CARDIOVASCULAR SYSTEM LOCATED?
A. CEREBRAL HEMISPHERES
B. AORTIC BODIES
C. CAROTID BODIES
D. BRAINSTEM (PONS AND MEDULLA)
Definition
D. BRAINSTEM (PONS AND MEDULLA)
Term
IN THE ORDER TO FUNCTION EFFECTIVELY, THE CENTRAL CARDIOVASCULAR CONTROL MECHANISM MUST RECEIVE SIGNALS REGARDING CHANGES IN BLOOD VOLUME OR PRESSURE. FROM WHERE DO THESE SIGNALS COME?
A. CENTRAL CHEMORECEPTORS
B. HYPOTHALAMUS
C. PERIPHERAL BARORECEPTORS
D. SKELETAL MUSCLES
Definition
C. PERIPHERAL BARORECEPTORS
Term
WHAT DOES THE FRANK-STARLING LAW OF THE HEART STATE?
A. THE LESS CARDIAC FIBERS STRETCH, THE GREATER THE STROKE VOLUME (TENSION UPON CONTRACTION)
B. THE MORE CARDIAC FIBERS STRETCH, THE GREATER THE STROKE VOLUME (TENSION UPON CONTRACTION)
C. THE MORE CARDIAC FIBERS STRETCH, THE GREATER THE HEART RATE
D. THE MORE CARDIAC FIBERS STRETCH, THE LESS THE STROKE VOLUME (TENSION UPON CONTRACTION)
Definition
B. THE MORE CARDIAC FIBERS STRETCH, THE GREATER THE STROKE VOLUME (TENSION UPON CONTRACTION)
Term
WHAT IS THE NORMAL CARDIAC EJECTION FRACTION?
A. 1/4
B. 1/3
C. 1/2
D. 2/3
Definition
D. 2/3