AP150 INTEGUMENTARY SYSTEM AND CUTANOUS SENSATION
NOTE: We are covering cutaneous/general sensation with some associated nervous
structures in the integument unit. This means we will be jumping through a few chapters
which I recognize is disorienting to many students, but cuts down on how much nervous
system material you get al at once later.
A powerpoint will be posted and you should refer to it regularly for the nervous
system/sensation component of this unit
CHAPTER 5: The Integument
o The entire chapter is relevant
o Focus pages 119-128, excluding “skin markings” on pg 125.
o Table 5.2 is a great summary, Table 5.3 is useful.
CHAPTER 15: Brain and Cranial Nerves
o Page 456 and figure 15.2
CHAPTER 19: Senses, General and Special
o pages 560-566, exclude “phantom pain” and “referred pain” for now
o Table 19.1 is great, Table 19.2 is a MUST STUDY
VISUAL ANALOGY GUIDE
MAIN OBJECTIVES: Students should be able:
To describe the structure of the skin and hypodermis (including its histology,
histological arrangement and the cellular composition of the epidermis).
To describe the basic functions of the accessory skin structures
To describe how the structures of the integument help the integument achieve each of
To describe the receptors and brain structures associated with cutaneous sensation
1. List the functions of the integument
2. List the three layers of the integument
3. What are the functions of the epidermis?
4. What is/are the functions of the dermis?
5. What is/are the functions of the hypodermis/subcutaneous layer?
6. What type of tissue makes up the epidermis?
7. How does the type of tissue found in the epidermis relate to the epidermis’ function?
8. Describe the process of keratinization and what it achieves?
9. How does keratinization help the epidermis perform its function?
10. What aspect of keratinization assists in the integuments function of protection?
11. What aspect of keratinization assists in the integuments function of reducing water
12. List the 5 layers of the epidermis from innermost to outermost? Describe the general
keratinization events that happen in each?
13. What layer of the epidermis has cells that are actively dividing?
14. Which layer of the epidermis is made of dead cells?
15. List the types of cells that are found in the epidermis?
16. Which epidermal cells function in protection against physical harm and water loss?
17. Which epidermal cells function in the protection against UV damage?
18. Which epidermal cells contribute to skin tone (color)?
19. Which epidermal cells function in protection against pathogens?
20. Which epidermal cells function in sensation?
21. What is the function of the lipids associated with keratinization?
22. What is the function of keratin?
23. Which layers of the epidermis have living cells? Dead cells?
24. Which parts of the body have thick skin? Thin skin?
25. What factors contribute to skin color?
26. What are dermal papillae?
27. What are the general functions of the dermis?
28. List the two layers of the dermis?
29. Which layer of the dermis is most superficial? Which is deep?
30. What is the predominant tissue found in the papillary layer of the dermis?
31. What is the predominant tissue found in the reticular layer of the dermis?
32. What is/are the function(s) of the papillary layer?
33. What is/are the function(s) of the reticular layer?
34. Describe what tissues are found in the hypodermis?
35. What are the functions of the hypodermis?
36. In what two locations are networks of blood vessels found in the integument??
37. Which parts of the integument relate to its function of thermoregulation?
38. Which parts of the integument relate to its function of sensation?
39. What is/are the general function(s) of hair and hair follicles?
40. What is/are the general functions of sebaceous glands?
41. What is/are the general functions of eccrine/merocrine glands? Apocrine glands?
42. What is/are the general functions of nails?
CUTANEOUS SENSORY MATERIAL (mostly from Ch 14)
43. What is the technical term for receptors located in the skin/integument and mucus
membranes continuous with the outside world
44. List the types of somatic receptors found within the body wall
45. What is proprioception
46. What is the difference between touch and pressure? Don’t make too much of this.
47. What are the cutaneous sensations (i.e., list the sensations detected on the skin)?
48. What is a mechanoreceptor?
49. What is a thermoreceptor?
50. What is a Nociceptor?
51. What cutaneous sensations are detected by free nerve endings?
52. Describe a Merkel cell/tactile disc in terms of its location within the skin, the sense
detected, and its functional sensory classification
53. Describe a Pacinian/Lamellated corpuscle in terms of its location within the skin, the
sense detected, and its functional sensory classification
54. Describe a hair root plexus in terms of its location within the skin, the sense detected,
and its functional sensory classification
55. Describe a Ruffini end organ/Ruffini corpuscle in terms of its location within the skin,
the sense detected, and its functional sensory classification
56. What does it mean that when we say these senses are processed contralaterally?
57. What specific part of the brain (cerebrum) is the primary site of cutaneous (somatic)
58. What is the somatosensory homunculus? Where is it located?
59. Which cranial nerve carries cutaneous sensory information from our face, auricle, and
temporal region to our brain?
60. Describe the cutaneous innervation of the median nerve.
61. Describe the cutaneous innervation of the ulnar nerve.
62. Describe the cutaneous innervation of the radial nerve
63. Describe the cutaneous innervation of the femoral nerve
64. Describe the cutaneous innervation of the common fibular/sciatic nerve
65. Describe the cutaneous innervation of the tibial/sciactic nerve
66. Which skull openings/passageways studied in lab does the trigeminal nerve travel
67. Which basic region of the brain does the trigeminal nerve originate from
CHALLENGE YOURSELF QUESTIONS (at back of chapter 5)
Matching Questions 1-10
Multiple Choice 2-6, 9