love is pain and pain is love. love hurts because sometimes if you show you care too much about that person youre judged and they back stab you but if you show no emotion you dont care about them. love could leave people scars in diffrent ways. wether its emotional scars or physical scars. or sometimes when you love a person you could lose them in a second or minute. sometimes when you love someone you would do anything for that person like stand in front of a bullet for them or get beat up by your parents or some strong people..or it could be sneaking out at night just to see them for a few minutes or seconds..and at the end they dont appreciate it which hurts. hope i answered your question.
A fertility doctor is a reproductive endocrinologist — a physician who practices a subspecialty of obstetrics and gynecology called reproductive endocrinology and infertility (REI). REI is an area of medicine that addresses hormonal functioning as it pertains to reproduction and infertility in both women and men.
The main cause is cooking
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.
