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BIO 2010 QUIZ 6 > QUIZ > Flashcards

QUIZ Flashcards

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Biology 101 flashcards
1
Q

Closed circulatory system

A

Cardiovascular system consists of strong muscular heart and blood
vessels
* Blood is always contained within vessels and normally never runs
freely through the body cavity

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2
Q

Three types of vessels

A

arteries, veins, and capillaries

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3
Q

Lymphatic system will___ returns it to blood

A

pick up excess tissue fluid

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4
Q

The heart ___ blood into ___

A

pumps, arteries

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5
Q

Arteries take oxygenated blood ___ from heart to ____ in the body where ___ exchange takes place

A

away, capillaries, gas

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6
Q

Human heart is ___

A

double pump

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7
Q

Double pump: right side pumps ____ blood to lungs

A

O2-Poor

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8
Q

Double pump: left side pumps ____ blood to the body

A

O2-Rich

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9
Q

___ separates
sides and prevents mixing.

A

Complete septum

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10
Q

two chambers

A

Atria (upper, thin-walled
chambers receiving blood)
Ventricles (lower, thick-walled
chambers pumping blood.)

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11
Q

Arteries take blood ___ from the heart.
Veins take blood __ the heart.

A

AWAY, TO

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12
Q

Valves ___ after blood moves through
them. Why?

A

close, * Keeps blood moving in one direction!

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13
Q

Atrioventricular (AV) valves are ____

A

between atria
and ventricles

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14
Q

tricuspid

A

right AV

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15
Q

bicuspid/mitral

A

left AV

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16
Q

Heart ____ is often due to ___ atrioventricular valve allowing blood to
___ back into atrium.

A

murmur, leaky, leak

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17
Q

Semilunar valves

A

between ventricles and
attached vessels, Aortic and Pulmonary
valves that take blood to the body and
lungs, respectively

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18
Q

Pulmonary circuit

A

Venae cavae (#11) bring O2-poor blood from the body to the right atrium (#1)
* Poor blood then goes Right atrium (#1) through right atrioventricular valve (the tricuspid valve)
into right ventricle (#2)
* Then through the Right ventricle through pulmonary semilunar valve (#3) into pulmonary trunk
and pulmonary arteries (#4)
* Then through Pulmonary arteries to the lungs (#5)

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19
Q

Systemic circuit

A

From lungs, pulmonary vein brings O2-rich blood to left atrium (#6)
* Left atrium through left atrioventricular valve (the bicuspid valve) into left ventricle (#7)
* Left ventricle through aortic semilunar valve into aorta (#9, #8 is a contraction)
* Aorta out to the tissues (#10)

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20
Q

Systole

A

contraction

21
Q

Diastole

A

relaxation

22
Q

Lub-dub sound caused by ____

A

valves closing

23
Q

Lub:

A

Atrioventricular valves closing (Tricuspid and Bicuspid)

24
Q

Dub:

A

Semilunar valves closing (aortic and pulmonary)

25
Q

The heartbeat or cardiac cycle

A

Step 1: Atria contract / Ventricles are relaxed
Step 2: Atria relax / Ventricles contract
Step 3: Atria and Ventricles relax (to refill with blood)

26
Q

Pulse

A

pressure wave that passes from heart to arteries

27
Q

___ pulse per ventricular systole

A

One

28
Q
  • SA (sinoatrial) node is ___
A

pacemaker for rhythm
* Every 0.85 seconds sends out signal to atria to contract
* Picked up at AV (atrioventricular) node causes ventricles to contract
* Nervous system and hormones can modify rhythm

29
Q

Time Atria Ventricles
0.15 sec Systole Diastole
0.30 sec Diastole Systole
0.40 sec Diastole Diastole

A

Heartbeat cycles:
Phase 1: artial systole
Phase 2: ventricular systole
Phase 3: artial and ventricular diastole

30
Q

Systolic value

A

(ventricular contraction)

31
Q

Diastolic value

A

(ventricular relaxation)

32
Q

Blood pressure is the ___

A

force of blood against the inside of blood vessel
walls.

33
Q

Blood will move from ___ to ___ pressure

A

high to low

34
Q

Blood pressure can be influenced primarily by:

A

cardiac output,
peripheral resistance, and blood volume. Body position, exercise, and
other factors may affect some of these variables.

35
Q

Systolic pressure

A

the maximum pressure in an artery during
ventricular contraction.

36
Q

Diastolic pressure

A

the minimum pressure in an artery during
ventricular relaxation.

37
Q

Best pulse site

A

Brachial (upper forearm) can also be radial (wrist) temporal (temples)

38
Q

A pulse is felt as the ___

A

expansion of the arteries during ventricular
systole (contraction)

39
Q

Pulse rate is the number of ____

A

heart beats per minute, is one way
heart rate (HR) is measured. As a result, pulse rate equals heart rate.

40
Q
  • A pulse can be detected in
A

several superficial arteries in the body.

41
Q

Pulse rate can be influences by

A

body position, activity, and emotions.

42
Q

Pulse is felt as the ____

A

expansion of the arteries
during ventricular systole

43
Q

SA (sinoatrial) node is ____ for rhythm

A

pacemaker

44
Q

Electrocardiogram (ECG)

A

Recording of electrical
changes that occur in heart
wall during cardiac cycle.

45
Q

Ventricular fibrillation is due to _____

A

uncoordinated contraction of the ventricles.
* Type of arrhythmia
* May be stopped using a defibrillator and CPR

46
Q

ECG is used to

A

to determine
the health of the heart and,
when present, diagnose
disorders of the heart.

47
Q

Components of ECG

A
  1. wave
  2. segment
  3. interval
  4. complex
48
Q
A

BIO 2010 QUIZ 6 (3 decks)

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