ANAT & PHYS (LL W/ACCESS)(CUSTOM)
ANAT & PHYS (LL W/ACCESS)(CUSTOM)
4th Edition
ISBN: 9781266039621
Author: McKinley
Publisher: MCG CUSTOM
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Chapter 14.5, Problem 17WDYL
Summary Introduction

To explain:

The region innervated by the intercostals muscles

Concept introduction:

Intercostal muscles are present in between the ribs and diaphragm and help in the process of breathing. There are different spinal nerves which innervate the different regions of the body. The thoracic nerves T1-T11 . The nerve plexus junctions are formed by the T1 nerve fibers only. The movement of the limbs is coordinated by these nerves. These are called as the thoracic nerves.

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You aim to test the hypothesis that the Tbx4 and Tbx5 genes inhibit each other's expression during limb development. With access to chicken embryos and viruses capable of overexpressing Tbx4 and Tbx5, describe an experiment to investigate whether these genes suppress each other's expression in the limb buds. What results would you expect if they do repress each other? What results would you expect if they do not repress each other?
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