Varicose veins occur because:

Veins and their valves are weak

Why can smoking lead to peripheral artery disease?

It thickens the blood and blocks binding of oxygen

Which is the correct flow of blood through the heart?

right atrium → right ventricle→ lungs

How do you calculate ankle to brachial index?

Divide each ankle pressure by the higher of the brachial

What is the function of Keratin?

To waterproof and strengthen the skin

What systems work with the lymphatic system

Circulatory system, Cardiovascular system

Why is the left ventricle more muscular than the right ventricle?

It needs to contract with enough force to push blood out to the body

what is the difference between veins and arteries?

Veins carry blood to heart while arteries carry it away

What is the function of Collagen?

To give the skin smoothness and elasticity

What is Cardiac Output?

Beats per minute times blood ejected per beat

Which is NOT a function of the lymphatic system?

Release hormones into the bloodstream

Why does cardiac output increase during physical exertion?

To provide increased amounts of fuel and oxygen to working muscles

There are 3 main layers of the skin. In order from the top of the diagram, what are they?

Epidermis, Dermis, and Subcutaneous

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Cardiovascular, Lymphatic, Integumentary Review

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review for PLTW Human Body Systems course

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Questions 42

Answers

1
Varicose veins occur because:
Veins and their valves are weak
Veins are thicker and lack valves
The heart muscle is weak
A buildup of plaque exists
2
This is the primary pacemaker of the heart.
Purkinje fiber
Atrial node
Sino atrial node
Bundle of His
3
What blood type(s) can O blood type receive?
O only
A, B, & O
A, B, AB & O
AB & O
4
There are no blood vessels in which of the following skin layers?
Dermis layer
Epidermis layer
Papillary layer
Subcutaneous layer
5
Label this part of the Skin Diagram
Arrector pili muscle
Dermal Papillae
Adipose Tissue
Nerves
6
Congestive heart failure has low cardiac output because of....
Increase in stroke volume
Low blood volume
Long history of pain and fatigue
Weakened, damaged heart muscle
7
Why can smoking lead to peripheral artery disease?
It causes the blood vessels to relax
The carcinogens can cause cancerous tissue
It thickens the blood and blocks binding of oxygen
It eliminates plaque buildup
8
Besides cool water, what is another recommendation for simple burn care?
ointment and pain medication
skin grafts
call 911
amputation
9
A sunburn is an example of what type of burn?
Thermal
Chemical
Electrical
Radiation
10
Which is the correct flow of blood through the heart?
vena cava → left atrium→ lungs
right atrium →pulmonary arteries→ lungs
right atrium → right ventricle→ lungs
right ventricle → left atrium → lungs
11
What are the antibodies for blood type A?
A
O
None
B
12
In referenc to the heart the word Systole means________?
Relaxation
Bottom
Top
Contraction
13
Skin can help
regulate calcium levels
regulate blood production
regulate water
regulate body temperature
14
What tissue type(s) comprise a cross-section of skin?
Connective and Epithelial
All of these tissues
Nervous and Muscular
Epithelial only
15
A woman with type A blood has a child with type A blood. Who could NOT be the child's father?
man with blood type B
man with blood type A
man with blood type AB
all could be the father
16
How do you calculate ankle to brachial index?
Add ankle pressure to brachial
Divide calf pressure by ankle pressure
Divide each ankle pressure by the higher of the brachial
Divide each ankle pressure by the lowest of the two brachial
17
Lymphatic Vessels are
All the above
Afferent lymphatics carry lymph to nodes
Resemble veins with thin walls and valves
Lymph that passes from capillaries into lymph vessels
18
Name the structure in #2.
Right Pulmonary Vein
Ascending Aorta
Superior Vena Cava
Right Pulmonary Artery
19
What is the function of Keratin?
To waterproof and strengthen the skin
To give the skin color
To nourish and hydrate the skin
To give the skin smoothness and elasticity
20
Which is Associated W/ Electrical Burn?
hormone issues
heart issues
lung issues
brain issues
21
What systems work with the lymphatic system
Red Twinkie
Circulatory system
Orgamans
Cardiovascular system
22
To find cardiac output, you multiply heart rate by...
Surface area
Body mass
Blood pressure
Stroke volume
23
An example of a symptom of a 2nd degree burn is.....
Blotchiness and blisters
Numbness
Light sensitivity
Discoloration
24
Why is the left ventricle more muscular than the right ventricle?
It needs to overcome the lack of nervous system control in the left side
It pumps a smaller volume of blood so it needs to contract more often
It needs to return blood to the lungs to get reoxygenated
It needs to contract with enough force to push blood out to the body
25
what is the difference between veins and arteries?
Veins are thicker and lack valves
All of the above
Veins carry deoxygenated blood while arteries carry oxygenated blood
Veins carry blood to heart while arteries carry it away
26
What about arteries structure prevent them from becoming varicose?
protected deeper in the body
all of these
thickness of the blood vessel
direction in which the blood is traveling
27
Name the structure in #5.
Left Atrium
Right Ventricle
Left Ventricle
Right Atrium
28
How many burn degrees are there?
1
5
2
3
29
a structure in the heart that opens and closes
artery
valve
vena cava
pulmonary
30
What is the function of Collagen?
To give the skin smoothness and elasticity
To waterproof and strengthen the skin
To nourish and hydrate the skin
To give the skin color
31
What is Cardiac Output?
Number of beats per minute
Volume of oxygen transported and used to create energy
Beats per minute times blood ejected per beat
Amount of blood ejected per beat
32
Name the structure in #6.
Mitral Valve
Pulmonic Valve
Aortic Valve
Tricuspid Valve
33
What's the worst kind of burn?
1st degree burn
being flamed by your fam
3rd degree burn
2nd degree burn
34
Deoxygenated blood enters the....
left ventricle
right atrium
right ventricle
left atrium
35
Which is not a Lymphatic Tissue?
Thymus
Tonsils
Spleen
Appendix
36
Which is NOT a function of the lymphatic system?
Release hormones into the bloodstream
Protect bodies of foreign objects
Battle infection
Maintain homeostasis
37
Why does cardiac output increase during physical exertion?
To provide increased amounts of fuel and oxygen to working muscles
Because the heart increases in size during exercise
To pump greater amounts of ATP to working muscles
Because the blood gets thinner and is easier to pump
38
Is the skin an organ?
Yes
No
39
What does a 3rd degree burn affect?
nerves
all of the above
subcutaneous
blood vessels
40
Calculate the ABI. All pressures in mmHg. R Brachial 120, L Brachial 116, R ATA (DPA) 60, R PTA 48
0.4
0.97
1.03
0.5
41
Label the starred part of the skin diagram
Sebaceous gland
Adipose
Hair follicle
Sweat gland
42
There are 3 main layers of the skin. In order from the top of the diagram, what are they?
Subcutaneous, Epidermis, and Dermis
Epidermis, Dermis, and Subcutaneous
Epidermis, Subcutaneous, and Dermis
Dermis, Epidermis, and Subcutaneous

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