Explanation:
- <em>Presynaptic mechanism:</em> one way to modify the synaptic transmission before it happens is affecting transmitters release, one example is calcium channel blockers (for example, verapamil), this action won't allow transmitters out, therefore, there won't be a synaptic transmission.
- <em>Postsynaptic mechanism:</em> one method to modify synaptic transmission after it happens is blocking the transmitter receptors, one example of this is antipsychotic drugs that block dopamine receptors.
I added some images with another examples for both cases. I hope you find this information interesting! Good luck!
<h3>~!+~!+~!+!+~!+~!+~!+~+!+~+!+~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+~!+~+!+~+!~+!+~+!~+!~+!~+!~+!~+!~+!~+!~+!~+~!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~</h3><h3 /><h3>Hello! If this answer doesn’t fulfill all of your questions, or it doesn’t have the exact information you are looking for, I apologize. But, I will try to help you to my best ability! <3</h3><h3 /><h2>Answer:</h2><h3>Plants have three tissue types: ground, dermal, and vascular. Animals have four: epithelial, connective, muscle, and bone.</h3><h3 /><h3>Again, hope this helps! Good luck! :D</h3><h3 /><h3>~!+~!+~!+!+~!+~!+~!+~+!+~+!+~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+~!+~+!+~+!~+!+~+!~+!~+!~+!~+!~+!~+!~+!~+!~+~!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~+!~</h3>
Answer:
The food in their mouth is basically pushed to their stomach by muscles that are in the lining of the tube between their mouth and stomach. Then, in their stomach the digested food is pushed again into your intestines. In the early year of space travel, astronauts actually used straws to suck paste-like foods that were dehydrated, out of tubes. Drinks and foods will just float away if they werent handled properly in space.
Explanation:
“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”
Explanation: Social distancing is staying at least 6 feet apart from another person when in public
