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Ch. 5 The Integumentary System
Martini - Fundamentals of Anatomy and Physiology 12th Edition
Martini, Nath, Bartholomew12th EditionFundamentals of Anatomy and PhysiologyISBN: 9780137854011Not the one you use?Change textbook
All textbooksMartini, Nath, Bartholomew 12th EditionCh. 5 The Integumentary SystemProblem 1c
Chapter 5, Problem 1c

Identify the different portions (a–d) of the cutaneous membrane and the underlying layer of loose connective tissue (e) in the diagram to the right.
c. ____

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1
Step 1: Understand the layers of the cutaneous membrane. The cutaneous membrane consists of the epidermis (a), dermis (b and c), and the underlying layer of loose connective tissue (e) called the hypodermis or subcutaneous layer.
Step 2: Identify the labeled portions in the diagram. Portion 'a' corresponds to the epidermis, which is the outermost layer composed mainly of stratified squamous epithelium.
Step 3: Portion 'b' is the papillary layer of the dermis, which is the upper part of the dermis containing loose connective tissue and capillaries.
Step 4: Portion 'c' is the reticular layer of the dermis, which is the deeper, thicker part of the dermis composed of dense irregular connective tissue.
Step 5: Portion 'e' is the hypodermis or subcutaneous layer, which lies beneath the dermis and consists mainly of loose connective tissue and adipose tissue.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Epidermis

The epidermis is the outermost layer of the skin, composed mainly of keratinized stratified squamous epithelium. It serves as a protective barrier against environmental damage, pathogens, and water loss. This layer is avascular and relies on diffusion from underlying layers for nutrients.
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The Epidermis: Layers Example 2

Dermis

The dermis lies beneath the epidermis and is a thick layer of connective tissue containing collagen and elastin fibers. It houses blood vessels, nerves, hair follicles, and glands, providing structural support and nourishment to the epidermis. The dermis is divided into the papillary and reticular layers.
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Introduction to the Dermis

Hypodermis (Subcutaneous Layer)

The hypodermis, or subcutaneous layer, is composed mainly of loose connective tissue and adipose tissue. It acts as an insulator, shock absorber, and energy reserve, anchoring the skin to underlying muscles and bones. This layer contains larger blood vessels and nerves that supply the skin.
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The Hypodermis
Related Practice
Textbook Question

The two major components of the integumentary system are

(a) The cutaneous membrane and the accessory structures

(b) The epidermis and the subcutaneous layer

(c) The hair and the nails

(d) The dermis and the subcutaneous layer

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Textbook Question

Identify the different portions (a–d) of the cutaneous membrane and the underlying layer of loose connective tissue (e) in the diagram to the right.

b. ____

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Textbook Question

Identify the different portions (a–d) of the cutaneous membrane and the underlying layer of loose connective tissue (e) in the diagram to the right.

d. ____

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Textbook Question

Identify the different portions (a–d) of the cutaneous membrane and the underlying layer of loose connective tissue (e) in the diagram to the right.

e. ____

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Textbook Question

Identify the different portions (a–d) of the cutaneous membrane and the underlying layer of loose connective tissue (e) in the diagram to the right.

a. ____

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views