FINAL_LABS_BIOS251_Online_Labs_Week_5-Integumentary_system_lab (1)

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Chamberlain University College of Nursing *

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BIOS251

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Mechanical Engineering

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Apr 3, 2024

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docx

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BIOS251 OL, Week 5 Lab Name: Ashly Hogue OL Lab 5: Integumentary system Learning Objectives: Identify the tissue and cellular features of the skin. Identify the structures associated with the skin. Correlate the anatomical features to its functions. Identify the role of the skin in thermoregulation and wound healing. Part A: Anatomy of the skin I. Microscopic anatomy of the skin. Complete the table using the image provided: Structure Function A Stratum corneum 15-30 layers, protection from microbes and dehydration B Stratum granulosum 3-5 layer of flatter keratinocytes C Stratum spinosum 8-10 layers of keratinocytes, dendritic cells live here D Stratum basale Single layer of mostly basal cells, also has melanocytes and merkel cells E Basal cell Cuboidal shaped stem cell that is a precursor to keratinocytes F Tactile nerve fiber Respond to stimuli G dermis Made up of connective tissue, strength/eleasticity H Dendritic cell Immune response to microbes I Tactile cell Receptors for touch J Living keratinocytes Produce keratin K melanocyte Produce melanin to give skin it’s color
BIOS251 OL, Week 5 Lab Name: Ashly Hogue II. Gross anatomy of the skin. Complete the table using the image provided. Structure Function A Hair shaft Traps air to aid in insulation B Blood capillaries Supply blood to the skin C Arrector muscle Makes hair stand up D Sebaceous gland Secretes oil E Eccrine sweat gland Secretes water to skin to regulate body temp F Hair bulb The hair grows from here G hypodermis deepest layer, contains fat H Lamellated corpuscle Pressure receptor I Epidermal ridge Provide increased surface area J Papillary region nutrients K Reticular region Strength/elasticity L dermis Assists in thermoregulation
BIOS251 OL, Week 5 Lab Name: Ashly Hogue Part B: Thermoregulation Use the diagram provided, to answer the questions. 1. Homeostatic regulatory mechanism involves atleast 3 independent components.Identify these components labeled as A, B, C in the diagram. A. Receptor B. The control center C. The effector 2. Describe in your own words the physiological events that would occur during this feedback mechanism . The receptor (skin) sends messages to the control center that it is getting too hot or too cold, the control center (the brain) sends signals to the effector (blood vessels in the skin) to either dilate to bring more
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