Answer: Refractory period of the cardiac action potential
Explanation:
Unlike the skeletal muscle which can be reactivated before it reaches a contraction, cardiac muscle must wait before it is almost completely relaxed to be activated again (because of its long refractory period), so one cannot make an increase in strength of contraction with a high frequency of stimulations.
A. is not true, some prescription medications are addictive. Oxycodone and other pain killers are addicting and they are prescription
b. They can provide relief from mild to serious symptoms is true
c. is not true, listen to any commercial for a prescription medication and listen for the side affect. They are sometimes worse than the diseases.
d. Not true. Prescription means that you must have a prescription from your Dr. and that prescription must be filled by a licensed pharmacist.
So B. is the best answer!
Answer:
The major blood vessels connected to your heart are the aorta, the superior vena cava, the inferior vena cava, the pulmonary artery (which takes oxygen-poor blood from the heart to the lungs where it is oxygenated), the pulmonary veins (which bring oxygen-rich blood from the lungs to the heart), and the coronary.
C. They must be certified by the AVMA.
Your family can encourage you in your new diet and maybe even eat some of the same foods as you. If they aren't supportive of your choice to eat healthier than it will be very hard to do so since your parents are the ones paying for your food.
Hope this helped!(:
