C. They are pulled toward Earth by the force of gravity (and in Physics you would learn that the deceleration speed of gravity is -9.8m/s/s)
I'm sorry its A..I didn't read it correctly...
Answer - B
Fish and reptiles both are ectothermic but fish have gills and reptiles have lungs. Ectothermic organisms do not have an internal mechanism of regulating their body temperature and are dependent on their atmosphere for temperature regulation. Fish, reptiles and invertebrates are examples of ectothermic organisms.
The answer would be:
its shape
its action
Pronator means that the muscle will be doing pronation movement. The pronation movement could happen in the hands and feet.
The word teres saying that its shape is round. The name doesn't contain a hint about the number(like bi-ceps or tri-ceps) or the location(like palmar or plantar).
Answer:
The sodium-potassium pump contributes to the resting membrane potential.
Explanation:
This is the stage in which the neuron is not depolarize. 3Na+ are pumped outside through the sodium channels, while K+ channels are open for2 K+ to enter the cells.After some time the Na+ channels closed up. However some K+ channels still leaks , so that K+ still escape out of the cells to the external environment ,which contains more of Na+. Therefore at this stage there are more Na+ outside the neuron compare to the inside the neuron. Therefore the inside of the neuron is negative , because more K+ are leaving the cells, leaving negatively charged anions inside, and the outside is positive due to more Na+ are outside, and because the K+ leaking outwards.
The regulation of the Na+ and K+ ions movements is regulated by sodium potassium pumps along the membrane of the neuron. if the potential at this stage is measured, it has a value of -70mv, and it is called membrane potential.
