Skin (Anatomy and Physiology) Lecture by Dr. Ali Abdel Kader
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Questions and Answers

Which of the following is NOT a physiological function of the skin?

  • Regulation of body temperature
  • Absorption of nutrients from the bloodstream (correct)
  • Excretion of waste products
  • Protection from the environment

What is the name given to the lines of tension in the skin, which are important for surgical incisions?

  • Dermal folds
  • Skin creases
  • Epidermis lines
  • Langer's lines (correct)

Which layer of the skin contains the blood vessels, nerves, and lymphatics?

  • Stratum corneum
  • Hypodermis
  • Dermis (correct)
  • Epidermis

Which type of skin is thicker and more adherent to the underlying structures?

<p>Thick skin (C)</p> Signup and view all the answers

Which of the following is NOT a component of the skin's appendages?

<p>Nerve endings (B)</p> Signup and view all the answers

What is the name of the deeper layer of fascia that is attached to the skin?

<p>Deep fascia (C)</p> Signup and view all the answers

What is the term used to describe the skin creases that are formed by the underlying muscle and bone structures?

<p>Skin creases (C)</p> Signup and view all the answers

Which layer of the skin is the thickest and provides the majority of the skin's protective function?

<p>Dermis (D)</p> Signup and view all the answers

What is the main function of microorganisms in relation to the skin?

<p>Protection against injury (C)</p> Signup and view all the answers

Which physiological process involves a negative feedback mechanism between Skin, Sweat glands, Skeletal muscles, and hypothalamus?

<p>Thermoregulation (C)</p> Signup and view all the answers

Why do sensory receptors in the Skin, especially the Face and Fingertips, provide immediate sensory feedback to the sensory cerebral cortex?

<p>To protect against injury (B)</p> Signup and view all the answers

Which function of the skin involves the protection and maintenance of normal water and electrolyte levels?

<p>Water storage (A)</p> Signup and view all the answers

In what scenario can dermal patches and creams utilize the skin's physiology?

<p>Absorption of drugs (B)</p> Signup and view all the answers

What can happen if there is a deficiency of Vitamin D in infants?

<p>Rickets (B)</p> Signup and view all the answers

'Expression' in the physiology of skin refers to what?

<p>Wide range of emotions and communication (B)</p> Signup and view all the answers

Which type of incision is recommended for better healing in the limbs?

<p>Longitudinal incision (B)</p> Signup and view all the answers

Which of the following is a function of the deep fascia?

<p>Contains muscles (B)</p> Signup and view all the answers

What is the difference between superficial and deep fascia?

<p>Superficial fascia contains fat, nerves, and vessels, while deep fascia surrounds muscles. (A)</p> Signup and view all the answers

Which of the following is true about the skin?

<p>Skin is thin in the palms and hands. (D)</p> Signup and view all the answers

Which of the following structures is formed by the deep fascia?

<p>Fibrous flexor sheaths (A)</p> Signup and view all the answers

What is the main function of the superficial fascia?

<p>Keeping body temperature (A)</p> Signup and view all the answers

Which of the following is a layer of the skin?

<p>Superficial fascia (A)</p> Signup and view all the answers

Which of the following is a characteristic of Langer's lines?

<p>They are important for the function and structure of the skin. (D)</p> Signup and view all the answers

What is a key function of the deep fascia in relation to muscles?

<p>It covers the muscles and assists in their action (A)</p> Signup and view all the answers

Where is the deep fascia thickened to form specialized structures?

<p>In the palm and sole, forming the palmar and plantar aponeuroses (C)</p> Signup and view all the answers

Which of the following is NOT a structure formed by the thickening of the deep fascia?

<p>Muscle fascia (D)</p> Signup and view all the answers

In which region of the body does the deep fascia form well-defined layers that may play a role in the spread of infections?

<p>Neck (A)</p> Signup and view all the answers

What is the relationship between the deep fascia and venous return?

<p>The deep fascia helps in venous return (D)</p> Signup and view all the answers

Which of the following is NOT a function of the deep fascia?

<p>Protecting against physical and chemical trauma (D)</p> Signup and view all the answers

What is the role of the deep fascia in the flexor surface of the fingers?

<p>It forms the fibrous flexor sheath (C)</p> Signup and view all the answers

What is the significance of the deep fascia around joints?

<p>It forms the retinacula (B)</p> Signup and view all the answers

What is the main function of the superficial fascia?

<p>Facilitate skin movements (D)</p> Signup and view all the answers

Which structure is responsible for secreting sebum in the skin?

<p>Sebaceous glands (A)</p> Signup and view all the answers

What do Langer lines correspond to in the skin?

<p>Natural orientation of collagen (D)</p> Signup and view all the answers

Where are skin creases most prominent according to the text?

<p>Flexor surfaces of palm and digits (D)</p> Signup and view all the answers

What is the significant feature about incisions made parallel to Langer lines?

<p>They heal faster (B)</p> Signup and view all the answers

Which area of the body has superficial fascia that is rich in fat?

<p>Penis and scrotum (B)</p> Signup and view all the answers

What distinguishes the superficial fascia in regions like eyelids and auricle of ear?

<p>It is devoid of fat (C)</p> Signup and view all the answers

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