Final answer:
Food handlers should maintain clean hands and nails and typically should not wear nail polish unless wearing single-use gloves to prevent contamination. Removing nail polish for surgery is necessary to observe nail beds for critical signs. Langerhans cells are immune cells in the epidermis, and fingerprints are due to epidermal ridges.
Step-by-step explanation:
Importance of Clean Hands in Food Handling
When working in food handling, maintaining clean hands and thoroughly clean finger nails is crucial to prevent the spread of contaminants and foodborne illnesses. It's important to wash hands thoroughly:
- Before beginning to prepare or serve food.
- Always after using the toilet.
- Whenever hands become soiled.
In regards to wearing nail polish when handling food, it is typically discouraged because it can chip and fall into the food, posing a contamination risk. However, if nail polish is worn, the food handler must wear single-use gloves to create a barrier between the nail polish and the food they are handling.
The statement "Do not wear nail polish. However, nail polish can be worn if the food handler wears single-use gloves." is True, as the gloves serve to maintain hygiene and food safety.
Clean Hands Requirement in Surgery
Regarding physicians insisting patients remove nail polish before surgery, this is because the polish can obscure the view of the nail beds, which are important indicators of blood circulation and oxygenation during procedures.
True or False Questions
True. Langerhans cells are indeed immune cells located in the epidermis.
True. Fingerprints are due to the ridge patterns present on the surface of the epidermis.
Brain and Touch Information
The brain receives touch information from the skin through a network of nerves that detect different types of stimuli, such as pressure, temperature, and pain. These signals travel from the skin to the spinal cord and ultimately to the brain where they are processed and interpreted.