BIOD151 - Module 7 Questions and Correct Answers, Complete Solution 2024.

BIOD151 - Module 7 Questions and Correct Answers, Complete Solution 2024. components of integumentary system (3) skin hair nails largest organ in the body skin layers of skin epidermis dermis hypodermis outer layer of skin epidermis middle layer of skin dermis inner layer of skin hypodermis functions of skin (3) 1. protection from pathogens 2. production of vitamin D 3. contain sense organs for protection of skin and underlying tissue merkel cells & meissner's corpuscles mechanorecptors mechanorecptor fucntion detect mechanical sensory information in form of light touch and vibration where can merkel cells found? epidermis nociceptors function detect pain such as pain from prick where are nociceptors found? embedded throughout the nerves pacinian corpuscles function detect mechanical sensory information of pressure applied to skin thermoceptors function detect hot and cold sensory organs function designed to detect sensory information and relay information to brain true or false: thermoreceptors detect fine touch false true or false: merkel's cells and meisner's corpuscles are thermoceptors false true or false: pacinian corpuscles detect pressure true what does an exocrine gland contain and how do its contents reach the surface of the skin -contains secretions -released through duct into an epithelial surface or lining Sebaceous glands -oil glands -produce sebum sebum definition helps keep skin and hair from drying out and cracking and inhibits growth of harmful microbes Sweat glands are also called ______ sudoriferous glands sweat glands -Produce sweat in almost every part of the skin -perspiration thermoregulation helps body to regulate its temperature -perspiration is one method what type of cells make up the epithelium? stratified squamous stratified squamous epithelium layers of flat cells is the epidermis vascular or avascular? avascular receives nutrients from basement membrane 4 distinct layers of epidermis (superficial to deep) 1. stratum corneum 2. stratum granulosum 3. stratum spinosum 4. stratum basale how long do dead cells remain in the stratum corneum before they slough off? ~2 weeks true or false: cells of the stratum basale have a high rate of cell division true epidermal ridges -unique to each person and consistent throughout a person's lifetime -finger prints cells found in epidermis (5) 1. keratinocytes 2. langerhans cells 3. fibroblast cells 4. melanocytes 5. merkel cells keratinocytes