Like all viruses, coronavirus-19 can eventually be prevented. viruses are spread in a multitude of different ways, but mainly through droplets from sneezing and coughing from an infected person. a way to start prevention is to ensure personal hygiene, cleanliness of commonly touched surfaces, auto immunization of a vaccines, and etc.
“The Cardiovascular System: Cardiac Cycle
1.
Valves open in response to _________________ on their two sides.
Blood pressure
2.
List the chambers/ vessels that the four valves connect:
______(1)______ Pulmonary semilunar ______(2)_____
______(3)______ Aortic semilunar ______(4)_____
______(5)______ Mitral ______(6)_____
______(7)______ Tricuspid ______(8)_____
1. R. ventricle
2. Pulmonary artery
3. L. ventricle
4. Aorta
5. L. atrium
6. Pulmonary vein
7. R. atrium
8. Inferior/superior vena cava
3.
a. Ventricular filling occurs during______ ventricular_________.
b. Blood flows through the _______ or __________ valves into the ventricles.
1. Mid-late
2. Diastole
3. Mitral
4. Tricuspid
4.
During Ventricular systole, what closes the AV valves?
Intraventricular pressure rising and causing ventricular contractions.
5.
During ventricular systole, what opens the semilunar valves?
Ventricles contract, raising pressure, bblood pressure then forces the semilunar valves open.
6.
During Isovolumetric relaxation, what closes the semilunar valves?
When blood pressure in the artery exceeds the blood pressure in the ventricle.
7.
During Isovolumetric relaxation, what opens the AV valves?
When blood pressure in the ventricle exceeds the blood pressure in the arteries.
8.
Why is hypertension hard on the heart?
Beacuse overtime high blood pressure causes heart muscles to thicken, which means more work to pump blood through vessels. It can cause heart disease because of heart constantly overworking.
9.
Looking at the ventricular volume graph, the stroke volume is approximately how many ml?
70ml
10.
During the four phases listed below, state whether the AV and semilunar valves are opened or closed:
1. Ventricular Filling
2. Isovolumetric
3. Ventricular Ejection
4. Isovolumetric
1. AV: Opened, Semilunar: Closed
2. AV: Closed, Semilunar: Closed
3. AV: Closed, Semilunar: Opened
4. AV: Closed, Semilunar: Closed”
Answer:
A yeast infection? I don't really know what you are asking
False, they are different values.
Answer:
The correct answer is - exogenous stain.
Explanation:
Exogenous stains are the intrinsic stains that affect teeth from inside as stain formed inside due to the external sources. In this type of stain, it formed after a tooth has erupted. These stains can occur when the very inner part known as dentin is turned dark or yellowish.
These stains can not be polished and removed. These can occur if an individual has plaque or calculus in the tooth.
Thus, the correct answer is - exogenous stain.