Membrane junctions that allow nutrients or ions to flow from cell to cell are (a) desmosomes, (b) gap junctions, (c) tight junctions, (d) all of these.
Step 1 of 3
1) Myelin sheaths are not one continuous covering – they are segmented with unmyelinated gaps known as the nodes of Ranvier. These myelinated fibers (axons) are able to send signals much faster than unmyelinated axons or the unmyelinated parts of a neuron (cell body, dendrites). The outer part of a Schwann cell (which is a type of glial cell listed below) is called the neurilemma. It helps in regeneration of damaged axons. Since Schwann cells are only located in the PNS, the brain and spinal cord are less able (or unable) to regenerate if damaged or destroyed.
Textbook: Human Anatomy & Physiology
Author: Elaine N. Marieb, Katja N. Hoehn
ISBN: Human Anatomy & Physiology
The full step-by-step solution to problem: 3 from chapter: 3 was answered by , our top Science solution expert on 03/14/18, 05:38PM. The answer to “Membrane junctions that allow nutrients or ions to flow from cell to cell are (a) desmosomes, (b) gap junctions, (c) tight junctions, (d) all of these.” is broken down into a number of easy to follow steps, and 26 words. This full solution covers the following key subjects: . This expansive textbook survival guide covers 29 chapters, and 710 solutions. Since the solution to 3 from 3 chapter was answered, more than 459 students have viewed the full step-by-step answer. Human Anatomy & Physiology was written by and is associated to the ISBN: Human Anatomy & Physiology. This textbook survival guide was created for the textbook: Human Anatomy & Physiology, edition: 9.