Integumentary System

Topics: Skin, Dermis, Keratin Pages: 8 (1843 words) Published: January 30, 2011
Lesson Plan
Integumentary System

I. Objectives:
At the end of this lesson, you should be able to :
a.) Define and identify the function of the Integumentary System b.) Identify the Parts and Functions of Integumentary System. c.) Cite some significant diseases related to the integumentary system. Its symptoms, causes, effects, and the treatment. d.) Identify some tips on how to protect or take good care of the system. e.) Appreciate the discussion through active participation

II. Subject Matter:
a.) Defining and identifying the functions of Integumentary System b.) Identifying the parts and functions of the system
c.) Discussing the significant diseases related to the body system. Its symptoms, causes, effects and the treatment d.) Learning some tips to protect the system
Online websites:
- Biology concepts and connections [Campbell.mitchell.Reece] International edition -Biology Book( Phoenix Science Series) – Carmelita M. Capco

III. Materials:
- Attractive visual aids
- Charts
- Cards
- Timer

IV. Daily Routine
A. Motivation
What to do?
1. The class will be divided into two teams. 
2. Each team must have 3 people who will represent as actor/actresses.  3. The team must guess the word that the team actor/actress is acting. 4. Each card has corresponding points. The easy one has a corresponding point of 1 while the harder one is 3 points. 5. Each team will be given a 2 minutes to complete the task. 6. The team that will earn the highest point in the given time limit will be considered as the winner.

B. Lesson Proper

Integumentary System
• The word integument is derived from the Latin word integumentum, which means "a covering." • The integumentary system is the external covering of the chordate body, comprising the skin, its pigments, and various exocrine glands that produce sweat, tears, sebum and other oils, mucous, waxes, scents, and milk. It also includes all derived structures such as hair, feathers, scales, teeth, baleen, nails, claws, horns, beaks, and hooves. • The skin allows the expression of the invisible mind of a person, as seen in the voluntary movement of the facial skin, which is capable of expressing an infinite variety of moods and emotions, all based on the subtle movement of skin cells from one location to another. As an organ system

- The integumentary system is often considered to be a single organ system and as such it has the largest surface area of all the organ systems. In human beings, it amounts to about 16 percent of the body weight. - It is composed of many types of tissue, including epithelial, connective, neural, and muscular. This organ system, composed of many diverse cells and tissues, provides a wall of defense between the body and the environment.

Function of the Integumentary System
• Protect the body’s internal living tissues and organs
• Protect against invasion by infectious organisms
• Protect the body from dehydration
• Protect the body against abrupt changes in temperature, maintain homeostasis • Help excrete waste materials through perspiration
• Act as a receptor for touch, pressure, pain, heat, and cold (see Somatosensory system) • Protect the body against sunburns
• Generate vitamin D through exposure to ultraviolet light • Store water, fat, glucose, and vitamin D

Parts and its functions

The epidermis is the outermost layer of skin that varies in thickness (in people) from 0.07 to 0.12 millimeters (mm). The palms of the hands average about 0.8 mm and the soles of the feet have a thickness of about 1.4 mm (Bloom et al. 1975). Its microscopic appearance is that of a keratinized stratified squamous epithelium.

The dermis is just below the epidermis, and forms a layer of skin with an average thickness in human beings of one to two mm. The thickness ranges from 0.6 mm on the eyelids and prepuce to three mm on the soles and palms. It contains blood...
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