Review of the Integumentary System

Which layer of the integumentary system is most reinforced with the protein keratin? (a)  

• Reticular Dermis

• Epidermis

• Papillary Dermis

• Hypodermis

Answer explanation

The epidermis is the layer of the integumentary system that is most reinforced with the protein keratin.

Layers of the Integument. Which layer of the integumentary system is most reinforced with the protein keratin?

• hypodermis

• epidermis

• dermis

• stratum corneum

Answer explanation

The epidermis is the layer of the integumentary system that is most reinforced with the protein keratin.

Imagine you're at the beach on a hot summer day, and you're curious about how your skin is protecting you in this environment.

The function of the integumentary system that is acidic and salty, helping to protect you even as you enjoy the sun and sea is (a)   .

(b)  

• Regulation of body temperature

• Production of vitamin D

• Sensory reception

• Protection against pathogens

• Antimicrobial

Answer explanation

The integumentary system's acidic and salty nature provides protection against pathogens and has antimicrobial properties, safeguarding the skin from harmful microorganisms.

Imagine you are developing a highly detailed 3D model of human skin for a medical simulation. You need to correctly layer the epidermis in the model of thick skin. Which of the following is the correct sequence of the layers of the epidermis, from the outermost layer to the innermost layer?

• Stratum corneum, stratum spinosum, stratum granulosum, stratum lucidum, stratum basale

• Stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, stratum basale

• Stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum

• Stratum basale, stratum granulosum, stratum spinosum, stratum lucidum, stratum corneum

Answer explanation

The correct sequence of the layers of the epidermis in thick skin is Stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, stratum basale.

Tags

NGSS.MS-LS4-2

In a hospital laboratory analysis, which type of tissue sample is only (a)   ?

(b)  

• Epithelial tissue

• Nervous tissue

• Muscle tissue

• Connective tissue

• Stratified squamous

Answer explanation

In a hospital laboratory analysis, epithelial tissue and stratified squamous tissue samples are the only types that are typically examined.

Imagine you are a dermatologist explaining skin layers to a patient. Which layer of the epidermis consists of cells that produce the tough protein substance called keratin?

• Stratum spinosum

• Stratum granulosum

• Stratum lucidum

• Stratum corneum

Answer explanation

The correct choice is Stratum granulosum, as this layer of the epidermis consists of cells that produce the tough protein substance called keratin.

Imagine you are studying the human body in a biology class. You are learning about the accessory structures of the integumentary system. (a)   is not considered a part of the accessory structures.

• Hair

• Skin

• Nails

• Glands

Answer explanation

The correct choice is 'Skin' because the skin is not considered an accessory structure of the integumentary system, but rather the main organ of the system.

Types of Epidermis (thick/thin). The thin epidermis has (a)   .

• 4 layers

• 5 layers

• 3 layers

• 2 layers

Answer explanation

The correct answer is 4 layers because the thin epidermis typically consists of 4 layers: stratum basale, stratum spinosum, stratum granulosum, and stratum corneum.

Dermis structures/layers

Which dermis structure has areolar connective tissue? (a)  

• Papillary layer

• Subcutaneous layer

• Epidermis

• Reticular layer

Answer explanation

The Papillary layer of the dermis contains areolar connective tissue, making it the correct choice in this question.

After following a new diet that includes a lot of carrots and sweet potatoes, you notice your skin turning orange in the palms and soles of your feet. The most likely cause of this change is (a)   .

• Excessive intake of beta-carotene

• Wearing orange-colored clothing

• Using a specific type of soap

• Excessive intake of vitamin C

Answer explanation

The correct choice is excessive intake of beta-carotene, which can cause skin discoloration, especially in the palms and soles of the feet, when consumed in large amounts from foods like carrots and sweet potatoes.