Short Questions
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
<strong>Short</strong> <strong>Questions</strong><br />
SKIN
• Beginning at the surface, list the five layers<br />
of epidermis. Compare keratinocytes in each<br />
layer in terms of their cell shape, capacity for<br />
division, staining properties and the visibility<br />
of organelles.
• List the four cell types in the epidermis<br />
and compare them in terms of<br />
1. their origin,<br />
2. number,<br />
3. location,<br />
4. binding structures and<br />
5. primary function.
• List the steps of melanin synthesis.
• Define and explain Dopa<br />
reaction.Describe how the melanin<br />
granules enterkeratinocytes.
• Describe Langerhans’ cells in terms of<br />
1. Shape.<br />
2. Location.<br />
3. Staining property.<br />
4. Granules.<br />
5. Immune function.
• Describe Merkel’s cell in terms of<br />
1. The sites of most abundance.<br />
2. Location in the skin.<br />
3. The origin.<br />
4. The shape.<br />
5. EM<br />
6. Their association with nerve endings.<br />
7. Functions.
• Name the two layers of the dermis and<br />
compare them.
• Name the types of sensory receptors<br />
found in epidermis,dermal papillae and<br />
reticular dermis.
• Enumerate causes of fixation of<br />
epidermis to dermis.
• In a table form differentiate between<br />
thin and thick skin.
• Describe histological features of hair<br />
shaft/root.<br />
• Describe histological features of hair<br />
follicle.
• Compare the hardness of keratin in the<br />
hair.(where is the soft and the hard<br />
keratin).
• What is the difference between<br />
follicular bulb and follicular bulge?
• Describe epidermal stem cells in terms<br />
of site and functions.
• Describe sebaceous glands in terms of:<br />
1. Type according to shape.<br />
2. Association with hair follicle.<br />
3. Site in which they occur without hair<br />
follicles.<br />
4. Mode of secretion<br />
5. Functions.
• Describe sebaceous gland in terms of:<br />
– Secretory part.<br />
– Duct.
• Name the 2 sweat glands types and<br />
compare them in terms of:<br />
1. Type as regards the shape.<br />
2. Distribution in skin.<br />
3. Mode of secretion.<br />
4. Composition of secretion.<br />
5. Secretory part epithelium.<br />
6. Excretory duct<br />
7. Innervation.
• Name the type of epithelium that lines<br />
the duct of sweat glands.
• What is meant by the following?:<br />
1. Nail bed<br />
2. Nail matrix<br />
3. Proximal nail fold<br />
4. eponychium .<br />
5. Lunule:<br />
6. Lateral nail folds
• Name the components of skin that play<br />
a role in :<br />
1. protection from Dehydration.<br />
2. protection from Infection.<br />
3. protection from uV rays.<br />
4. Regulation of body temperature.<br />
5. Sensory reception.<br />
6. Excretion.
• define the following terms.:<br />
– Albinism.<br />
– Psoriasis.<br />
– Linea graviderum.<br />
– Glassy membrane.<br />
– Birbeck’s granules.<br />
– Melanosomes.<br />
– Pheomelanin<br />
– Acne.