Chapter 20, Problem 9.1BGL

(a)

Summary Introduction

To label: The structures in figure 20.10 (a)

Introduction: The brain is the most vital organ in the human body. The brain has three major regions namely cerebrum, brainstem, and cerebellum. The brain is the central process unit of the body as most of the process like voluntary to involuntary function and cognitive function are carried out by the brain.

(b)

Summary Introduction

To label: The structures in figure 20.10 (b).

Introduction: The epithelial cell is formed by joining cells that together form layers of epithelial cells in the body. The epithelial cells have important functions like protecting the tissue layers and hence they are always found on the surface of the organs and tissues. The epithelial cells also act as a barrier to control the movement of molecules in-between the glands.

(c).

Summary Introduction

To label: The structures in figure 20.10 (c).

Introduction: The epithelial cells are usually found on the body surfaces and all the surfaces of the organs like skin, urinary tract, organ surfaces, and in blood vessels. The epithelial cells are one of the primary tissue in the body that take most of the functions in the body system. A simple epithelium can be of three types like simple cuboidal, simple squamous, and simple columnar.