WGU D312 Anatomy & Physiology OBJECTIVE ASSESSMENT Comprehensive Resource To Help You Ace Includes Frequently Tested Questions With ELABORATED 100% Correct COMPLETE SOLUTIONS Guaranteed Pass First Attempt!! Current Update!! WITH CLEAR IM

WGU D312 Anatomy & Physiology OBJECTIVE ASSESSMENT Comprehensive Resource To Help You Ace Includes Frequently Tested Questions With ELABORATED 100% Correct COMPLETE SOLUTIONS Guaranteed Pass First Attempt!! Current Update!! WITH CLEAR IMAGES integumentary system 1. Which structure are depicted by the labels in the given diagram? A. Epidermis, B. Dermis, C. Hypodermis Epidermis Correct Answer: - the outermost layer of the skin - composed of 4 or 5 layers - is rich in keratin Dermis Correct Answer: - much thicker than the epidermis - responsible for elasticity and strength of the skin, supplies the epidermis with nutrients, and plays an important role in thermoregulation - contains collagen & elastic Hypodermis Correct Answer: - known as subcutaneous layer and not classified as part of the skin - composed of connective tissue that contains fat, blood vessels, and sensory receptors - functions as a protective cushion and insulator - anchors the skin to the underlying bone or muscle 2. How does sweating cool the body? Correct Answer: Heat is released as sweat evaporates 3. Which type of exocrine sweat glands are located on the arms and legs? Correct Answer: Merocrine 4. How will the body adapt to the lower temperature to prevent hypothermia? Correct Answer: A reduction in sweat, production, and decreased blood flow to the skin 5. Stratum corneum Correct Answer: The outermost layer of the epidermis comprising 20- 30 layers of dead keratinocytes; helps water per the skin and prevent water loss 6. Stratum corneum - Correct Answer: An additional layer appearing between the stratum granulosum and corneum; found only in the hairless, thick skin of the fingertips, palms, and soles of the feet 7. Stratum granulosum Correct Answer: 3 to 5 layers of mature keratinocytes that help make the skin waterproof 8. Stratum spinosum Correct Answer 8 to 10 layers of living keratinocytes joined together by adhesive protein connections 9. Stratum basale Correct Answer: A single layer of cubodial-shaped cells made up of stem cells, keratinocytes, and melanocytes; these cells divide to create new epidermal cells 10. Merocrine sweat gland Correct Answer: - are found all over the skin. - consists of a twisted tube located within the dermis that opens directly onto the surface of the 11. Skin as a sweat pore - are activated by the nervous system in response to hyperthermia - can also release sweat due to emotional stress 12. Sebaceous glands Correct Answer: - secrete sebum (oil) to soften the skin and hair - most of these glands open into hair follicles - are abundant throughout the body but are absent on the palms of the hands and soles of the feet. 13. Apocrine sweat gland Correct Answer: - develop during puberty and mainly located in the armpits and genital - The secretory part of the gland is located in the dermis, and the duct opens into a hair follicle - do not contribute to thermoregulation but may be activated in response to emotional stress 14. Ceruminous glands Correct Answer: are modified apocrine sweat glands located deep in the auditory canal of the external ear 15. Kerantinocytes Correct Answer: epidermal cells that produce keratin and another substance that makes the skin water proof