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LAB > Lab 13: Circulatory II & Respiratory > Flashcards

Lab 13: Circulatory II & Respiratory Flashcards

(61 cards)

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1
Q

respiratory function

A

gas exchange

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2
Q

circulatory transports __

A

transports blood w/ gasses b/w lungs and body cells

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3
Q

Blood pressure meaning

A

basis for maintaining functional and stable movement of blood from heart to body

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4
Q

Pressure depends on:
4 things

A

Blood volume
Blood vessel size
Blood flow rate
Resistance of blood flow

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5
Q

Cardiovascular center
location

A

medulla oblongata where it receives sensory receptors + higher brain centers

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6
Q

3 receptors in cardiovascular center

A

Proprioceptors
Baroreceptors
Chemoreceptors

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7
Q

Sympathetic cardiac

releases what

A

norepinephrine + epinephrine (dilate; increase blood flow)

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8
Q

what happens to rate and contractions of sympathetic cardiac

A

increase

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9
Q

what does Parasympathetic cardiac

release

A

acetylcholine

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10
Q

(specialized cardiac muscle cells) is called

A

Autorhythmic fibers

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11
Q

2 functions of electrical activity of heart

A

=Depolarize + act as pacemakers
=Form cardiac conduction system (provide pathway for electrical activity)

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12
Q

*refer to notes for cardiac excitation process

A

notes

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13
Q

Atrioventricular (AV) node
location and function

A

lower interatrial septum
relays impulse from atria to ventricles

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14
Q

AV bundle of his function

A

carry electrical signals from the AV node to the bundle branches.

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15
Q

purkinje fibers function and location

A

Located: in the inner ventricular walls of the heart,
= specialized myocardial fibers that conduct an electrical impulse that enables the heart to contract in a coordinated fashion

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16
Q

Electrocardiography function

A

Measurement and analysis of heart activity (diagnosis of cardiac function)

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17
Q

The recording of the electrical changes of the heart is called

A

Electrocardiogram (ECG or EKG)

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18
Q

what is a Lead

A

The arrangement of 2 electrodes

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19
Q

negative terminal of ECG is located where

A

right arm

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20
Q

what do waves detect

A

detects myocardial infarcts (regions of dead myocardial tissue that do not depolarize)

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21
Q

P wave

A

Upward (positive) deflection
Associated with atrial depolarization

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22
Q

QRS

A

=Series of negative and positive deflection
=Associated w/ ventricular depolarization
=Repolarization of atria takes place and is obscured by ventricular changes

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23
Q

ventricular repolarization is positive or negative

A

Positive deflection following QRS

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24
Q

T wave

A

Positive deflection following QRS = ventricular repolarization
Longer duration and lower amplitude than QRS

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25
is ventricular repolarization faster or slower
slower and less synchronized
26
what does it mean when u see an Inverted T wave (negative)
abnormal
27
pulse meaning
Alternating surges of pressure (Expansion and recoil) in artery that occur with contraction and relaxation of LV
28
what is the avrg normal pulse
70-76
29
Blood pressure is known as
arterial blood pressure
30
Systole
contracted state
31
Diastole
relaxed state
32
Sphygmomanometer =
= measure arterial blood pressure
33
Systolic pressure
maximum pressure in arteries during ventricular contraction (systole)
34
Diastolic pressure =
minimum pressure in arteries during ventricular relaxation (diastole)
35
Valsalva maneuver
increases intrathoracic pressure (used to see the effect of thoracic pressure changes on venous blood pressure)
36
Lateral walls have 3 bony projections, what are they
Superior Middle Inferior nasal conchae
37
soft and hard palate differences
soft doesnt have bone
38
Nasopharynx location
above and behind soft palate
39
Oropharynx location
posterior to mouth
40
laryngopharynx location
posterior to larynx
41
Epiglottis
flap that extends diagonally over entrance to larynx
42
what is the adams apple
Thyroid cartilage (adam's apple)
43
Pleural membrane function
facilitates free movement of lungs
44
Parietal pleura lines _
thoracic wall
45
visceral pleura covers what
outer surface of each lung
46
Pleural cavity
between parietal and visceral (has pleural fluid for lubrication)
47
Perichondrium
layer of dense irregular connective tissue on either side of cartilage
48
Chondrocytes
mature cartilage cells situated in lacunae (holes) within intercellular matrix
49
Spirometer
measures lung volumes and capacities
50
Tidal volume (TV)
volume of air with each normal quiet respiration
51
Expiratory Reserve Volume (ERV)
= volume of air that can be expired after a normal expiration
52
Vital Capacity (VC)
maximum amount of air that can be moved into / out of lungs from maximal inspiration to maximal expiration
53
Inspiratory Reserve Volume (IRV)
volume of air inhaled after a normal inspiration
54
IRV EQUATION
IRV = VC - (ERV+ TV)
55
Pulmonary ventilation brings what
brings oxygen to alveoli of lungs and removes CO2
56
Function of blood
transport of respiratory gasses b/w tissues and lungs
57
2 ways O2 is carried
Hemoglobin (majority) Blood plasma (the rest is dissolved here
58
Respiratory centers controls what
respiration
59
Central chemoreceptors (@ medulla) respond to what
respond to increase in pCO2 and H+ ions of cerebrospinal fluid
60
Peripheral chemoreceptors (@ aortic arch) respond to what
response to increase pCO2 and H+ , decreases in pO2
61
Nerve impulses from chemoreceptors stimulates what
respiratory centers in brain so rate and depth of breathing increases

LAB (12 decks)

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