Integumentary System Layers
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Questions and Answers

What is the main reason why infants and elderly people are more sensitive to cold?

  • They have a faster metabolism
  • They have more muscle mass
  • They have more subcutaneous fat
  • They have less subcutaneous fat (correct)
  • What is the primary site of injection for a subcutaneous injection?

  • Skin epidermis
  • Muscle tissue
  • Blood vessels
  • Fatty tissues just beneath the skin (correct)
  • What is the main function of the dermis?

  • To produce skin pigmentation
  • To provide mechanical support (correct)
  • To regulate body temperature
  • To produce sebum
  • What is the hypodermis composed of?

    <p>Fatty tissues and connective tissue</p> Signup and view all the answers

    What is the primary function of the subcutaneous tissue?

    <p>To store energy in the form of fat</p> Signup and view all the answers

    What is the primary function of the dermis?

    <p>To provide a barrier against external factors</p> Signup and view all the answers

    What is the term for the condition characterized by a yellowish discoloration of the skin?

    <p>Jaundice</p> Signup and view all the answers

    Which of the following is NOT a component of the hypodermis?

    <p>Nervous tissue</p> Signup and view all the answers

    Which of the following structures controls thermoregulatory networks?

    <p>Hypothalamus</p> Signup and view all the answers

    What is the main function of the subcutaneous tissue?

    <p>To store energy in the form of fat</p> Signup and view all the answers

    What is the term for a collection of blood outside of blood vessels?

    <p>Haematoma</p> Signup and view all the answers

    What is the term for the condition where the blood vessels in the fingers and toes constrict in response to cold temperatures?

    <p>Raynaud's phenomenon</p> Signup and view all the answers

    What is the term for the injection of medication into the subcutaneous tissue?

    <p>Subcutaneous injection</p> Signup and view all the answers

    Which of the following is a characteristic of the hypodermis?

    <p>It is areolar tissue with a loose network of connective tissue</p> Signup and view all the answers

    Which of the following tissues is the epidermis classified as?

    <p>Epithelial Tissue</p> Signup and view all the answers

    What is the primary function of the hypodermis?

    <p>To bind the skin to the underlying tissues</p> Signup and view all the answers

    What type of tissue can be found in the hypodermis?

    <p>Connective tissue</p> Signup and view all the answers

    What is the main component of subcutaneous fat in the hypodermis?

    <p>Adipose tissue</p> Signup and view all the answers

    What is the function of subcutaneous fat in the hypodermis?

    <p>To serve as an energy reservoir and thermal insulation</p> Signup and view all the answers

    Which of the following statements is true about the hypodermis?

    <p>It is indistinctly bounded from the dermis</p> Signup and view all the answers

    What is the difference in subcutaneous fat thickness between women and men?

    <p>8% thicker in women</p> Signup and view all the answers

    Which of the following regions has relatively abundant subcutaneous fat?

    <p>Abdomen, hips, thighs, and female breasts</p> Signup and view all the answers

    Study Notes

    Integumentary System

    • The integumentary system consists of the epidermis, dermis, and hypodermis (also known as subcutaneous tissue)
    • The epidermis is epithelial tissue
    • The dermis is connective tissue
    • The hypodermis is connective tissue, composed of fibroblasts, adipocytes, and macrophages, with a matrix of collagen and elastin

    Hypodermis

    • The hypodermis is a layer of connective tissue beneath the skin
    • It pads the body and binds the skin to underlying tissues
    • The hypodermis has more areolar and adipose tissue compared to the dermis
    • Subcutaneous fat in the hypodermis serves as an energy reservoir, provides thermal insulation, and is compressible, protecting deeper tissue by absorbing pressure and blows

    Subcutaneous Fat

    • Subcutaneous fat is composed predominantly of adipose tissue
    • It is not uniformly distributed in the body, with more in the abdomen, hips, thighs, and female breasts
    • Subcutaneous fat is thicker in women than in men (average 8%) and varies with age
    • Infants and elderly people have less subcutaneous fat, making them more sensitive to cold

    Clinical Concepts

    • Subcutaneous injections are administered into the fatty tissue just beneath the skin
    • Skin wound healing is a complex process that involves multiple stages and factors

    Skin Conditions

    • Jaundice, erythema, cyanosis, albinism, pallor, and haematoma are all skin conditions with distinct characteristics and causes

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    Description

    Identify the components of the integumentary system, including the epidermis, dermis, and hypodermis, and their corresponding tissue types.

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