Menopause happens because of a DECREASE in the ovaries' production OF the hormones ESTROGEN and progesterone.
Answer:
Bradycardia
Explanation:
Bradycardia is a slower-than-normal heart rate, while all the other options include rapid or fast paced heart rates.
Answer:
1. spontaneously
2. resting potential
3. action potentials
4. pacemaker potentials
5. K+
6. Na+
7. into
8. Ca+
Explanation:
Pacemaker cells (also known as sinoatrial node cells) are cells that generate rhythmic impulses and set the pace for blood pumping in the heart. These cells have the ability to rhythmically depolarize and initiate action potentials. In pacemaker cells, Ca2+ and Na+ levels are higher in the extracellular environment, while K+ concentration is higher intracellularly. The pacemaker action potentials have three phases: 1-depolarization, where membrane potential reaches -40 mV and voltage-gated Ca2+ channels open, 2-repolarization, where voltage-gated Ca2+ channels close and voltage-gated K+ channels open, and finally 3-gradual depolarization, which is caused by the slow influx of Na+ ions.
The tube that connects to mouth to the stomach is the esophagus.
The correct option is B.
According to CDC, adverse drug events cause more than 700,000 emergency hospital visits annually in USA. There are several reasons for these adverse drug events and one of them is the use of non-prescribed drugs by individuals. Over-the- counter- drugs are those drugs that people can buy without any doctor prescribing the drugs for them. Using drugs in this manner causes serious problems which are usually life threatening.
