Integumentary System Chapter 6 Quiz

Questions and Answers

Place the following layers in order from superficial to deep.

epidermis, dermis, hypodermis, fascia, muscle

Label the structures of the integument.

epidermis, papillary layer of dermis, reticular layer of dermis, subcutaneous layer

Skin cells play an important role in producing which vitamin?

Vitamin D (correct)

Vitamin E

Vitamin B

Vitamin A

Vitamin C

Match the structure with its protective function.

Skin = Protects against abrasion; contains melanin, which absorbs damaging UV light Hair = Protects against abrasion; acts as a heat insulator, protects the eyes against foreign objects Glands = Produce secretions that create an environment unsuitable for some microorganisms Nails = Protect the ends of the fingers and toes from damage; can be used in defense Signup and view all the answers

Identify the following layers of the epidermis from the descriptions.

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Which structure is highlighted?

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Reddened skin reflects:

Dilated blood vessels, sending more blood to the dermis Signup and view all the answers

Melanin is produced and stored in which of the following?

Melanocytes Signup and view all the answers

Describe the events occurring during keratinization by matching each event with a location.

Stratum basale = Cells are mitotic; deepest epidermal layer Stratum spinosum = Contains several layers of polygonal keratinocytes Stratum granulosum = Keratinization begins; keratinocytes begin to fill with keratin Stratum lucidum = The keratinocytes within this layer are flattened and filled with the protein called eleidin Stratum corneum = These dead cells have a hard protein envelope, contain keratin, and are often peeled or scraped off Signup and view all the answers

Which structure is highlighted?

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Label the structures associated with the dermis.

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Contraction of the arrector pili muscles causes the hair follicle to:

Become perpendicular to the skin, resulting in the hair 'standing on end' Signup and view all the answers

Label the cells of the epidermis.

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Which structure is highlighted?

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Identify the structures associated with the exocrine glands of the skin.

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Match the major skin gland with its description.

Sebaceous glands = Produce sebum, an oily substance rich in lipids Sweat glands = Consist of eccrine and apocrine glands Signup and view all the answers

Select the way in which sweat glands function in homeostasis.

Temperature regulation Signup and view all the answers

The subcutaneous layer of skin consists of:

Areolar and adipose tissue Signup and view all the answers

The statement is true regarding the subcutaneous layer (hypodermis).

True Signup and view all the answers

Which structure is highlighted?

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Categorize the appropriate structures or descriptions with the appropriate layer of skin that is highlighted in blue.

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Nails are scalelike modifications of which layer of the integument?

Stratum basale Signup and view all the answers

Fill in the sentence with the appropriate part of the nail.

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Place the following layers of the hair in order from superficial to deep.

cuticle, cortex, medulla Signup and view all the answers

Label the structures of hair in the figure.

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Which structure is highlighted?

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Place the events that occur during wound healing into the correct order.

1 = The cut blood vessels bleed into the wound 2 = A blood clot forms, leukocytes enter the wound 3 = Blood vessels regrow, granulation tissue forms 4 = Stratum basale regenerates, connective tissue fibrosis occurs Signup and view all the answers

Of the following factors, which one does not contribute to skin aging?

The skin increases the number and efficiency of epidermal dendritic cells, causing an increase in immune responsiveness. Signup and view all the answers

Match the type of skin cancer with its description.

Malignant melanoma = Most deadly type Squamous cell carcinoma = Arises from keratinocytes of stratum spinosum Basal cell carcinoma = Most common; originates in stratum basale Signup and view all the answers

This question was not on the test - hair/skin layers picture.

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This question was not on the test - hair layers picture.

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This question was not on the test - skin layers picture.

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Skin model - this question was not on the test.

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Study Notes

Integumentary System Overview

The integumentary system includes skin, hair, nails, and associated glands.
Layers from superficial to deep: epidermis, dermis, hypodermis, fascia, and muscle.

Skin Layers and Structures

Epidermis: Outermost layer, responsible for protection and contains melanin for UV protection.
Dermis: Middle layer containing papillary and reticular layers; responsible for strength and elasticity.
Hypodermis (subcutaneous layer): Deepest layer consisting of areolar and adipose tissue, serving insulation and cushioning.

Key Functions of Skin and Structures

Skin provides protection against abrasions and UV radiation.
Hair acts as a heat insulator and protects eyes from foreign objects.
Glands produce secretions that inhibit microbial growth.
Nails protect finger and toe tips and assist in defense.

Cellular Components of the Epidermis

Skin cells, such as keratinocytes, play a role in producing vitamin D.
Melanin is produced in melanocytes, which are located in the epidermis.

Keratinization Process

Occurs in several layers of the epidermis:
- Stratum basale: Mitotic cells, base layer.
- Stratum spinosum: Contains several layers of keratinocytes.
- Stratum granulosum: Keratinization starts as keratinocytes fill with keratin.
- Stratum lucidum: Flattened keratinocytes, found only in thick skin.
- Stratum corneum: Outermost layer, composed of dead, keratin-filled cells.

Hair and Associated Structures

Hair follicles are embedded in the dermis; contraction of arrector pili muscles causes hair to stand up.
Layers of hair from superficial to deep: cuticle, cortex, and medulla.

Exocrine Glands of the Skin

Sebaceous Glands: Produce oily sebum.
Sweat Glands: Include eccrine (thermoregulation) and apocrine glands.

Wound Healing Phases

Begins with bleeding into the wound, followed by blood clot formation.
Leukocytes enter to fight infection and aid in healing.
Granulation tissue forms as blood vessels regrow; stratum basale helps regenerate the epidermis.

Skin Aging and Health

Skin aging is impacted by decreased stem cell activity, reduced collagen and elastic fibers, and UV exposure.
Types of Skin Cancer:
- Malignant melanoma: Most deadly type.
- Squamous cell carcinoma: Originates from keratinocytes of the stratum spinosum.
- Basal cell carcinoma: Most common skin cancer, originates in the stratum basale.

Nails

Nails are modifications of the stratum corneum and assist in tactile sensitivity. The nail matrix contains mitotic cells, while the nail root lies beneath the eponychium.

Summary of Key Terms

Keratinization: The process where keratinocytes fill with keratin.
Sebaceous glands: Oil-producing glands.
Eccrine glands: Sweat glands for thermoregulation.
Hypodermis: Layer beneath the dermis, not part of the skin itself, contains fat storage and cushioning.

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Description

Test your knowledge of the integumentary system with this quiz based on Chapter 6. You'll order the layers of the skin and label its structures while learning about the essential roles skin cells play in vitamin production. Perfect for reinforcing your understanding of human anatomy!

Integumentary System Chapter 6 Quiz

Questions and Answers

Place the following layers in order from superficial to deep.

Label the structures of the integument.

Skin cells play an important role in producing which vitamin?

Match the structure with its protective function.

Identify the following layers of the epidermis from the descriptions.

Which structure is highlighted?

Reddened skin reflects:

Melanin is produced and stored in which of the following?

Describe the events occurring during keratinization by matching each event with a location.

Which structure is highlighted?

Label the structures associated with the dermis.

Contraction of the arrector pili muscles causes the hair follicle to:

Label the cells of the epidermis.

Which structure is highlighted?

Identify the structures associated with the exocrine glands of the skin.

Match the major skin gland with its description.

Select the way in which sweat glands function in homeostasis.

The subcutaneous layer of skin consists of:

The statement is true regarding the subcutaneous layer (hypodermis).

Which structure is highlighted?

Categorize the appropriate structures or descriptions with the appropriate layer of skin that is highlighted in blue.

Nails are scalelike modifications of which layer of the integument?

Fill in the sentence with the appropriate part of the nail.

Place the following layers of the hair in order from superficial to deep.

Label the structures of hair in the figure.

Which structure is highlighted?

Place the events that occur during wound healing into the correct order.

Of the following factors, which one does not contribute to skin aging?

Match the type of skin cancer with its description.

This question was not on the test - hair/skin layers picture.

This question was not on the test - hair layers picture.

This question was not on the test - skin layers picture.

Skin model - this question was not on the test.

Study Notes

Integumentary System Overview

Skin Layers and Structures

Key Functions of Skin and Structures

Cellular Components of the Epidermis

Keratinization Process

Hair and Associated Structures

Exocrine Glands of the Skin

Wound Healing Phases

Skin Aging and Health

Nails

Summary of Key Terms

Studying That Suits You

Description

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