ADV Anatomy and Physiology homework help?

[CedarGirl10]

I just wanted some second opinions on my assignment I am working on to make sure I am right. This class is very important to me and want to make sure I am understanding it!

1) What opens the AV valves?

My answer: Atrial pressure--> Ventricular pressure?

2) What opens the semilunar valves?

My answer: Ventricular pressure--> Pressure in arteries

3) What closes the AV valves?

My answer: Blood moving back towards the atria when ventricles contract.

4) What closes the semilunar valves?

My answer: The heart as a whole during atrial contraction

5)The conduction system of the heart slows down the most as it passes through the ___node to allow time for the _____to fill before they contract?

My answer: Av node/ Purkinje fibers or ventricles???

6) What does a high systolic pressure indicate?

My answer: systolic hypertension (high blood pressure)

7) What does a high diastolic pressure indicate?

My answer: Hypertension and risk of a stroke????

8) What anatomical structure produces the systolic blood pressure?

THe heart? Not sure!

9) What anatomical structure produces the diastolic blood pressure?

Blood vessels? Not sure.....

10) List 2 different ways your blood pressure is regulated?

My answer: Sympathetic and parasympathetic nervous system

11) On its own, the SA node, located in the _______, normally fires about _____ times a minute. At rest the parasympathetic fires, traveling via ____ nerve, normally slows this rate down about ____bpm.

My answers: Right atrium, 50-100 times, vagus, 60-70 bpm

12)Where are important baroreceptors located for the regulation of blood pressure?

Is it aorta and carotid sinus or is it aortic arch and aortic sinus? I have the first one down.

13) "Heart attack" is a common word for myocardial infarction which refers to an area of tissue death due to obstruction of the circulation usually by a _____ (local forming clot) or an ____("Circulating clot")

My answer: Thrombocyte and thrombus

[YoutubeTheNP]

Not bad on your answers. some of them need some work. I'll help you on a few. . . .

6.) elevated systolic means your left ventricle is contracting against high pressures in the vascular system, such as PVR peripheral vascular resistance amongst many other things

7.) Elevated diastolic pressure is the pressure when the ventricles are relaxed. If it remains elevated, can fatigue the heart, can cause LVH, amongst other things.

8.) Left ventricular contraction

9.) Left ventricular relaxation

13.) Thrombus / embolus