Use Chapter 6 in your textbook to do these Pre-Workshop Activities.
Activity A: Skin Layers and Structures
Write the name of the structure of the skin or skin layer that best fits the descriptions below.
1._____________________ Fingerlike projections of dermis that produce dermal ridges 2._____________________ Avascular layer of epidermis where mitosis takes place 3._____________________ Cell layer of the epidermis that appear to have spikes sticking out of them membrane. 4._____________________ Contractions of this muscle cause goose bumps 5._____________________ Layer of epidermis that is 25-30 cell layers thick 6._____________________ Tough, water proof layer of the epidermis cell 7._____________________ Top layer of the dermis 8._____________________ Epidermal layer found only in thick skin 9._____________________ Layer of dermis that contains sweat glands and pacinian corpuscles 10._____________________ Layer of the epidermis that has visible granules in the cells 11._____________________ Layer under the skin made mostly of adipose tissue 12._____________________ Layer also known as the stratum germinativum 13._____________________ Layer of dermis where find free nerve endings for pain 14._____________________ Structure used to detect touch sensations 15._____________________ Layer of skin made of stratified squamous tissue
Activity B: Cells of the Epidermis
Write the name of the epidermal cell that best fits the descriptions below.
1._____________________ | Cells that are 80-90% of the epidermis |
2._____________________ | Immune cells |
3._____________________ | Produces a pigment that absorbs UV radiation |
4._____________________ | Cells that produce the protein keratin |
5._____________________ | Along with a sensory neuron give the sensation of touch |
6._____________________ | Spidery looking cells |
7._____________________ | Cells easily damaged by UV radiation | 8._____________________ | Cells made in the bone marrow that migrate to the skin |
1._____________________ | Type of sweat gland asociated with hair follicles |
2._____________________ | Produces a pigment that absorbs UV light |
3._____________________ | Projections of dermis that contain capillaries to nourish sratum basale layer |
4._____________________ | Its secretion is sebum |
5._____________________ | Visible part of hair |
6._____________________ | Type of sweat gland most numerous on palms, soles and brow | 7._____________________ | Type of gland attached to hair follicle by a tiny duct |