UNT A&P Kasparian Exam 2 With Complete Solutions.

Select the most correct statement concerning skin cancer. - Answer-Melanomas are rare but must be removed quickly to prevent them from metastasizing. _______ is an inherited condition that affects the heme pathway; it leaves the skin scarred and gums degenerated, and may have led to the folklore about vampires. - Answer-Porphyria A needle would pierce the epidermal layers of the foreman in which order? - Answer-Corneum, granulosum, spinosum, basale The major regions of a hair shaft include all of the following except ________. - Answer-external root sheath Acne is a disorder associated with __________. - Answer-sebaceous glands The dermis ______________. - Answer-has two layers Which muscles attached to the hair follicles cause goose bumps? - Answer-Arrector pili If a splinter penetrated the skin into the second epidermal layer of the sole of the foot, which cells would be damaged? - Answer-Lucidum Which of the following cutaneous receptors is specialized for the reception of touch or light pressure? - Answer-Meissner's corpuscles Which of the following is a skin sensory receptor for touch? - Answer-Meissner's corpuscle Which statement correctly explains why hair appears the way it does? - Answer-Kinky hair has flat, ribbonlike hair shaftsSudoriferous glands vary in distribution over the surface of the body. Which of the following is correct? - Answer-Ceruminous glands secrete cerumen, which is thought to deter insects Although the integument is a covering, it is by no means simple, and some of its functions include ________________. - Answer-resident macrophage-like cells whose functions is to ingest antigenic invaders and present them to the immune system The function of the root hair plexus is to __________. - Answer-allow the hair to assist in touch sensation Vernix caseosa is a _______________. - Answer-whitish material produced by fetal sebaceous glands The ________ gland is a modified sudoriferous gland that secretes wax. - Answer-ceruminous Nutrients reach the surface of the skin (epidermis) through the process of _________. - Answer-diffusing through the tissue fluid from blood vessels in the dermis The reason the hypodermis acts as a shock absorber is that __________. - Answer-the major part of its makeup is adipose, which serves as an effective shock absorber Which type of skin cancer appears as a scaly reddened papule and tends to grow rapidly and metastasize? - Answer-Squamous cell carcinoma Keratinocytes are an important epidermal cell because they _________. - Answer-produce a fibrous protein that gives the skin much of its protective properties Melanocytes and keratinocytes work together in protecting the skin from UV damage when keratinocytes ____________. - Answer-accumulate the melanin granules on their superficial portion, forming a UV-blocking pigment layer The epidermis consists of five layers of cells, each layer with a distinct role to play in the health, wellbeing, and functioning of the skin. Which of the following layers is responsible for cell division and replacement? - Answer-stratum basaleThe integumentary system is protected by the action of cells that arise from bone marrow and migrate to the epidermis. Which of the following cells serve this function? - Answer-macrophages called epidermal dendritic cells Water loss through the epidermis could cause a serious threat to health and well-being. Which of the following protects us against excessive water loss through the skin? - Answer-Lamellated granules of the cells of the stratum granulosum, a glycolipid that is secreted into extracellular spaces. The dermis is a strong, flexible connective tissue layer. Which of the following cell types are likely to be found in the dermis? - Answer-fibroblasts, macrophages, and mast cells