Integumentary System Overview

Questions and Answers

What is redness of the skin called?

erythema

In which layer of the skin would you expect to see the greatest increase in thickness due to friction or irritation?

stratum corneum

What are the specific glands referenced in this clinical case?

merocrine sweat glands

Which of the following events occur as we age regarding our integumentary systems? (Select all that apply)

There is a tendency to overheat easily. Signup and view all the answers

Which of the following is NOT a function of the integumentary system?

Production of digestive enzymes Signup and view all the answers

What correctly describes the layers of the dermis?

The reticular layer gives skin its strength and toughness. Signup and view all the answers

Which of the following is NOT associated with a hair follicle?

Merocrine sweat glands Signup and view all the answers

The layer directly below the skin, called the hypodermis, __________.

is often the site of subcutaneous injections of drugs Signup and view all the answers

Which layer of the epidermis is described INCORRECTLY in the statement?

The stratum basale contains abundant keratinocytes. Signup and view all the answers

Which of the following structures are formed by the infolding of epidermal tissue? (Select all that apply)

Glands Signup and view all the answers

Why is some level of UV exposure necessary for skin cells?

Skin cells need some sunlight in order to produce vitamin D. Signup and view all the answers

Why would the fingertips have easily visible epidermal ridges?

To give a better grasp on objects. Signup and view all the answers

Which pigment is responsible for giving people a deeply tanned look after sun exposure?

melanin Signup and view all the answers

What is the name of the sweat glands involved in thermoregulation?

merocrine sweat glands Signup and view all the answers

What part of your nail anatomy is being worked on when a manicurist works on your cuticles?

eponychium Signup and view all the answers

What event is taking place when terminal hairs on a man's head are being replaced by vellus hairs?

male-pattern baldness Signup and view all the answers

The kind of muscle that raises the hairs on your arm is __________ muscle.

smooth muscle Signup and view all the answers

Hairs are living structures.

False Signup and view all the answers

Which of the following is NOT a function of sweat production?

Stimulation of hormone production Signup and view all the answers

Which cells play a role in initiating immune responses to pathogens that invade the skin?

Langerhans cells Signup and view all the answers

What is the scientific basis for the statement 'Don't pick your scabs.'?

The scab is the blood clot used to seal the wound, and removing it will reopen the wound and cause you to bleed again. Signup and view all the answers

Which part of the skin is observed if oil glands, blood vessels, hairs, and smooth muscles are seen under a microscope?

the reticular layer of the dermis Signup and view all the answers

It is FALSE to say that the subcutaneous layer contains large volumes of elastic cartilage.

True Signup and view all the answers

Which cells replace the collagen that is damaged in a skin injury?

fibroblasts Signup and view all the answers

Study Notes

Skin Conditions and Anatomy

Erythema refers to the redness of the skin due to capillary dilation in the dermis.
An increase in skin thickness, notably in the stratum corneum, occurs when skin is subjected to friction or irritation; this layer comprises mainly dead cells.
Merocrine sweat glands are prevalent sweat glands distributed throughout the body, particularly in the palms and soles.

Aging and Skin Changes

Aging results in fewer active hair follicles leading to thinner hair, easier overheating, and a slower healing process; all these changes are common in older adults.

Integumentary System Functions

The integumentary system does not produce digestive enzymes, confirming this as a non-function.
The reticular layer of the dermis is responsible for the skin's strength and toughness.

Skin Layers and Structures

Glands, nails, and hair follicles form from the infolding of epidermal tissue as structures in the dermis.
The hypodermis, beneath the skin, serves as the common site for subcutaneous drug injections.

Skin Pigmentation and Protection

Melanin is the pigment primarily responsible for skin tanning after UV exposure.
Some UV exposure is crucial for skin cells to produce vitamin D, necessary for various bodily functions.

Nail Structure and Hair

The eponychium is the part of the nail being worked on during a manicure, specifically related to the cuticles.
Hairs are non-living structures, and smooth muscle is responsible for raising arm hairs.

Immune Response and Healing

Langerhans cells are key players in initiating immune responses against pathogens that penetrate the skin.
Scabs function as blood clots to seal wounds, and removing them prematurely can reopen wounds and lead to further bleeding.

Miscellaneous Skin Functions

Sweat production aids in thermoregulation but does not stimulate hormone production.
Fibroblasts are responsible for replacing damaged collagen in skin injuries, facilitating repair.

Skin Layer Misconceptions

The subcutaneous layer does not contain large volumes of elastic cartilage, contradicting a common misconception.

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Description

Test your knowledge on the integumentary system, including skin conditions, aging effects, and skin structure. This quiz will challenge your understanding of the skin's anatomy, functions, and responses to environmental factors.