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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 7
Chapter 5, Problem 7

The cutaneous plexus and subpapillary plexus consist of
a. Blood vessels providing the dermal blood supply.
b. A network of nerves providing dermal sensations.
c. Specialized cells for cutaneous sensations.
d. Gland cells that release cutaneous secretions.

Verified step by step guidance
1
Step 1: Understand the terminology. The 'cutaneous plexus' and 'subpapillary plexus' refer to specific networks within the skin layers. The term 'plexus' generally means a network, often of blood vessels or nerves.
Step 2: Recall the anatomy of the skin's vascular system. The cutaneous plexus is a network of blood vessels located between the hypodermis and the dermis, supplying blood to the skin.
Step 3: Consider the subpapillary plexus, which is a smaller network of blood vessels located just below the epidermis, within the upper dermis, providing blood to the dermal papillae and epidermis.
Step 4: Differentiate between blood vessels and nerve networks. While nerves provide sensation, the term 'plexus' in this context is primarily used for blood vessel networks supplying the skin.
Step 5: Conclude that both the cutaneous plexus and subpapillary plexus consist of blood vessels providing the dermal blood supply, corresponding to option (a).

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Key Concepts

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

Cutaneous Plexus

The cutaneous plexus is a network of blood vessels located between the hypodermis and the dermis. It plays a crucial role in supplying blood to the skin, regulating temperature, and supporting skin metabolism.
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Subpapillary Plexus

The subpapillary plexus is a finer network of blood vessels found just below the dermal papillae. It supplies the upper layers of the dermis and epidermis, aiding in nutrient delivery and thermoregulation.

Dermal Blood Supply vs. Nerve Networks

Understanding the difference between vascular networks (blood vessels) and neural networks (nerves) in the skin is essential. The cutaneous and subpapillary plexuses refer specifically to blood vessels, not nerves or gland cells.
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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

The two major components of the dermis are the

(a) Superficial fascia and cutaneous membrane

(b) Epidermis and subcutaneous layer

(c) Papillary layer and reticular layer

(d) Stratum basale and stratum corneum

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Textbook Question

In which layer(s) of the epidermis does cell division occur?

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Textbook Question

What widespread effects does epidermal growth factor (EGF) have on the integument?

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Textbook Question

Beginning at the basement membrane and traveling toward the free surface, the epidermis includes the following strata:

(a) Corneum, lucidum, granulosum, spinosum, basale

(b) Granulosum, lucidum, spinosum, basale, corneum

(c) Basale, spinosum, granulosum, lucidum, corneum

(d) Lucidum, granulosum, spinosum, basale, corneum

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Textbook Question

What two major layers constitute the dermis, and what components are in each layer?

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