Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology 12 > Lesson Ten > Flashcards

Lesson Ten Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

Left and right atria are…

A

Collecting chambers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Right atria function

A

Collects blood from Vena cava

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Left atria function

A

Collects blood from pulmonary veins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Left and right ventricle function

A

Pumps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Right ventricle

A

Sends blood to the lungs via pulmonary trunk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Left ventricles

A

Send blood to the body via aorta

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Atrioventricular valves

A

Valves between the atria and ventricles to prevent backflow of blood. Right side tricuspid
Left side bicuspid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Chordae Tendineae

A

Strong fibrous strings that support the AV valve, keeps valves from inverting with force of blood flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Semi-lunar valves

A

Between ventricles and arteries exiting heart; prevents backflow of blood from pulmonary trunk into right ventricle. Prevents backflow of blood from aorta into left ventricle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Pulmonary trunk

A

Branches off the pulmonary arteries, received blood from right ventricle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Septum

A

Wall of the heart, separates left and right sides of the heart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Systole

A

Contraction of heart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Diastole

A

Relaxation of heart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Ventricles have a _____ contraction?

A

Stronger and longer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Luv-dubb sound of the heart is due to what?

A

Closing of the atripventricular valve and then the semi-lunar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Intrinsic quality of the heart

A

Can beat without any nervous system stimulation, meaning it can be removed from body and still beat

17
Q

The best is controlled by…

A

Nodal tissue which has both muscular and nervous tissue characteristics

18
Q

SA Node

A

Sinoatrial Node: found in upper wall of right atrium

19
Q

AV Node

A

Atriocentricular node: found at bottom right atrium near the septum

20
Q

How the heart beeps…

A

SA Node sends out excitation impulse every 0.85 seconds. The impulse causes both atria to contract, and then the impulses are sent to the AV Node. Then an impulse is sent from the AV Node and up the pukinje divers which stimulates both ventricles to contract from bottom upwards

21
Q

Graph name

A

PQRST

22
Q

P curve

A

Records stimulations contraction of atria as they drive blood out of their ventricles

23
Q

QRS

A

Contraction of ventricles as they drive blood out of their arteries, must stronger contraction from ventricles

24
Q

T

A

Marks recovery of ventricles

25
Q

Heart rate center is located in the….

A

Medulla oblongata of the brain, SA Node is connected to brain by Vagus nerve

26
Q

Vague nerve has two systems that affect heart beat:

A

Parasympathetic system causes the heart beat to slow down

Sympathetic system causes the heart beat to increase during time of stress

27
Q

When the brain perceived the blood is delivered to tissues too slow….

A

The brain signals the SA Node to speed up its contraction

28
Q

Systolic pressure

A

Refers to the pressure when the ventricles contract (highest blood pressure reading)

29
Q

Diastole

A

Refers to the blood pressure when the heart is at rest (lowest blood pressure)

30
Q

Pulse

A

As blood is pumped through arteries the walls swell and recoil

31
Q

Normal blood pressure

A

120/80

32
Q

Hypertension

A

High blood pressure

140/90 or 125/90

33
Q

Reasons for high blood pressure

A 
Stress
Plaques
High salt intake
Smoking
Stimulants
Lack of excercise
Diet
Working too hard
34
Q

Hypotension

A

Low blood pressure, blood does not reach all organs example 110/70

35
Q

Reasons for low blood pressure

A

Cuts or amputated limbs, drugs, hormones

36
Q

Body can adjust blood pressure by…

A

Being monitored by the hypothalamus, and the body can dilate thus lowering blood pressure in them or constrict to increase blood pressure

Biology 12 (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions