TBR BIO Chapter 1 numbers 44 and 46

[anomedic]

---

Members don't see this ad.

passage:
View attachment passage 7.docx
Questions:
View attachment 44 and 46.docx

I am completely lost in number 44, for number 46, why will the molecule be moving through axons; explanation says "axons, not dendrites, are closest to the organs", I don't understand this.
All help is appreciated