+
Related Flashcards
Related Topics
Cards In This Set
| Front | Back |
|
Which of these carry oxygen-poor blood?
pulmonary arteries
pulmonary veins
aorta
left atrium
left ventricle
|
Why does the left ventricle have a thicker wall than the right ventricle?
A more muscular wall is required to supply the pumping that powers the flow of blood into the systemic circuit.
A more muscular wall is required to pump blood into the pulmonary circuit.
The position of the heart in the chest cavity allows for the left ventricle to develop a thicker wall then the right ventricle.
The left ventricle is responsible for systole, while the right ventricle is responsible for diastole.
The left ventricle contains the pacemaker
|
|
The one-way flow of blood in veins is maintained by ______________.
positive pressure from the chest cavity
blood pressure
muscles pressing against the veins
their thick walls
valves
|
Blood pressure is lowest in ___________.
veins
arteries
capillaries
arterioles
venules
|
|
If your blood pressure were 120/70, it would mean that
Your blood pressure during systole is 120 and your blood pressure during diastole is 70.
You have high blood pressure.
Your blood pressure during diastole is 120 and during systole is 70.
When your ventricles relax, the pressure against your arterial walls is 120 and when your ventricles contract, the pressure against your arterial walls is 70.
Your blood pressure during systole is 120 and your heart rate is 70.
|
Plasma is primarily ____________.
white blood cells
red blood cells
water
platelets
fibrinogen
|
|
You increase your risk of cardiovascular disease by reducing your consumption of ________.
fruits and vegetables
red meats
products containing trans fats
products that are high in cholesterol
tobacco products
|
What path does a molecule of oxygen take from the nose to the respiratory surface?
Pharynx → larynx → trachea → bronchus → bronchiole → alveolus
Larynx → pharynx → trachea → bronchus → bronchiole → alveolus
Pharynx → larynx → bronchus → bronchiole → alveolus → trachea
Pharynx → larynx → trachea → bronchiole → bronchus → alveolus
Bronchiole → alveolus → pharynx → larynx → trachea → bronchus
|
|
Breathing is regulated by
the diaphragm and chest muscles.
somatic centers in the brain.
the circulatory system.
autonomic centers in the brain.
energy intake.
|
Oxygen is mostly transported through the body
dissolved in the blood.
dissolved in red blood cells.
bound to hemoglobin.
bound to dissolved iron.
bound to carbon.
|
