The correct answer is B. Pheromones are released into the environment rather than being held within the body.
Explanation
Pheromones are chemical substances secreted by living beings, in order to cause specific behaviors in other individuals of the same species. They are a means of transmitting volatile signals produced in liquid form, which are then dispersed throughout the environment. This is used by different species of plants and animals as a means of communication and almost all send one or more codes by this means, both to attract or reject each other sexually as well as for other purposes. According to the above, the correct answer is B. Pheromones are released into the environment rather tan being held within the body.
C. Running in the heat can cause exhaustion and you could faint if you've overworked yourself or just aren't healthy. <span />
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.
Answer:
Rabies or Neurotropic lyssavirus
Explanation:
Drugs that have chemicals that influence perceptions, moods consciousness or behavior
