The effect nervous system has on the heart rate is
Stimulation by parasympathetic nerves causes the heart rate to slow down.
The two branches of the autonomic (involuntary) nervous system regulate heart rate. The parasympathetic nervous system and the sympathetic nervous system (SNS and PNS) (PNS). To increase heart rate, the sympathetic nervous system (SNS) produces the catecholamines epinephrine and norepinephrine. The hormone acetylcholine is released by the parasympathetic nervous system (PNS) to reduce the heart rate. Your heart rate may briefly increase due to stress, coffee, and excitement, whereas it may temporarily decrease due to meditation or deep, steady breathing. Any amount of exercise will raise your heart rate, which will stay up as long as you keep exercising.
To learn more about nervous system here:-
brainly.com/question/13487019?referrer=searchResults
#SPJ4
Answer:
You should always put the low power objective lens into the center place.
Explanation:
- Always cover the microscope with the supplied dust cover when not in use.
- Store in a dry place.
- In humid or moist environments, it is advisable to store the microscope in a waterproof container with a drying agent.
- Do not touch the optical lens with bare fingers.
- Do not store the microscope in direct sunlight.
Cnidarians <span>are the lower Invertebrates that have a jelly-like layer between endoderm and ectoderm</span>
Answer:
The scientific claim that is most consistent with the findings in the question given is that: histone methylation opens up chromatin at gene R, so transcription factors can bind to DNA more easily.
Explanation:
The transcription of the R gene decreases when histone methyltransferase is inhibited, this proves that histone methylation increases the transcription of the R gene.
When the gene is in the condensed state, RNA polymerase can no longer gain access to the region so as to transcribe the R gene. Thus, in order for the gene to be transcribed, the gene has to be in the open (euchromatin) state.
Histone methylation makes the gene in the euchromatin state.
Therefore, the scientific claim that is most consistent with the findings in the question given is that: histone methylation opens up chromatin at gene R, so transcription factors can bind to DNA more easily.
Answer: reptiles are ectothermic , while Amphibians are endothermic
Explanation:reptiles and Amphibians are vertebrate.reptiles are a group of air breathing vertebrates that have internal fertilization and scaly bodies.some difference between Amphibians and reptiles include
1)the presence of dried scale in reptiles to prevent water loss.in Amphibians, their skin is smooth and moist and without scale
2)reptiles have more powerful jaws
3) internal fertilization is in reptiles while fertilization is usually external in Amphibians
4)the Amphibians respire by gills, lungs , mouth or through their most skin but reptiles respire through the lungs.
But Reptiles are ectothermal and so are Amphibians
They are both terrestrial and aquatic organisms.they both have separate sexes.
Examples of Amphibians are salamander and frog.example of reptile are turtle and alligator
