BIO 210 Final Exam Review Questions And Verified Correct Answers Guaranteed Success.

As cells are pushed from the deeper portion of the epidermis toward the surface, - correct answer they die The dermis is composed largely of - correct answer dense irregular connective tissue What is false about the skin? - correct answer the subcutaneous layer is between the dermis and the epidermis In a condition called incontinentia pigmenti, the skin has deep dark splotches, due to melanin that seeps down into the dermis. Normally, melanin is confined to the - correct answer epidermis The layer of the epidermis that includes a single row of cells that undergo mitosis is the - correct answer stratum basale What determines the color of the skin? - correct answer the amount of melanin that melanocytes produce Blood vessels in the ________ supply epidermal cells with nutrients - correct answer dermis The subcutaneous layer consists of - correct answer areolar and adipose tissue In areas of the skin where the epidermis is thin, the __________ may be absent - correct answer stratum lucidum What is the epidermis responsible for? - correct answer -retains water in deeper skin layers -keeps out harmful chemicals and pathogens -protects the skin against mechanical injury The nail plate is produced by - correct answer specialized epithelial cells The hardness of a nail comes from - correct answer keratin The arrestor pili muscle is attached to - correct answer a hair follicle Sebaceous glands secrete - correct answer fat globules that mix with cellular debris, forming sebum Eccrine (merocrine) sweat glands respond to what? - correct answer respond primarily to elevated body temperature What is a normal response to excessive loss of body heat in a cold environment? - correct answer dermal blood vessels constrict What type of gland would be found on the palm side of the hands? - correct answer merocrine The skin dissipates (releases) excess body heat by - correct answer evaporation, dilating dermal blood vessels, and activating eccrine sweat glands A burn affecting one the epidermis is a - correct answer superficial partial-thickness burn In treating a burn patient, the "rule of nines" is used to estimate the - correct answer surface area of the burn In the inherited disease ichthyosis, the skin is rough, brown, and very scaly because the uppermost layer cannot peel off as easily as skin normally does. The part of the skin that is affected is the - correct answer epidermis Skin cells play an important role in producing - correct answer vitamin D The motor nerve fibers in the dermis stimulate - correct answer muscles and glands in the dermis Reddened skin reflects - correct answer dilated blood vessels with more blood entering the dermis What is true regarding scar formation after injury? - correct answer overgrowth of collagen fibers in the dermis What is not a function of bones - correct answer to provide a set point for the control body temperature What is not associated with spongy bone? - correct answer osteons T/F: Based on shape, the femur is associated flat bones - correct answer false Articular cartilage of a long bone is found - correct answer on the outer surface of the epiphyses A bone thickens (becomes wider) - correct answer as compact bone is deposited beneath the periosteum of the diaphysis A bone lengthens - correct answer as a result of increased activity within the epiphyseal plate Osteoblasts are ___________, whereas osteocytes are ___________ - correct answer bone-forming cells; mature bone cells Osteoclasts are - correct answer cells that break down bone matrix Pituitary dwarfism results from a decreased secretion of ________, which as a result decreases the rate of cell division of ____________ - correct answer growth hormone ; cartilage cells T/F: Hyaline cartilage changes to adipose tissue during endochondral bone formation - correct answer false Endochondral ossification _____________, whereas intramembranous ossification ____________ - correct answer replaces hyaline cartilage ; replaces embryonic connective tissue T/F: Sex hormones stimulate ossification of the epiphyseal plate - correct answer true Red bone marrow functions in the formation of - correct answer red blood cells, white blood cells, and platelets To which end of the epiphyseal plate is bone added? - correct answer diaphysis A compound fracture - correct answer exposes the broken bone to the outside Correctly list the steps of fracture repair in sequence - correct answer a hematoma forms, fibrocartilage develop, bony callus forms In the femur spongy bone is mainly found in the ? - correct answer epiphysis When an orthodontist puts a wire on a tooth she's places a stress on the bone where the tooth is. The bone will respond to this stress by? - correct answer remodeling Which hormone will increase blood calcium levels? - correct answer parathyroid hormone The zone of calcified cartilage in the growth plate is closer to which part of a long bone? - correct answer diaphysis T/F: Vitamin D is needed for collagen production - correct answer false T/F: In a child with rickets, their leg bones can curve (bend but not break). This is because they do not have enough calcium in their bones. - correct answer true T/F: Regarding the primary ossification center of a long bone, calcified chondrocytes form true bone - correct answer false T/F: Regarding the secondary ossification center of a long bone, it forms mainly cortical bone - correct answer false Compact bone has _________, whereas spongy bone has _________ - correct answer osteons ; trabeculae Someone with a vitamin C deficiency may develop brittle (easily broken) bones. What are their bones not producing enough of? - correct answer collagen fibers Name 2 specific places you would find hyaline cartilage in a long bone of a 10 year old girl - correct answer articular cartilage, epiphyseal plate Where in a long bone would you find the Zone of resting cartilage? - correct answer in epiphyseal plate closest to epiphysis