BIO 210 Test 3 Questions With 100% Correct Answers | Latest Update 2026 | Guaranteed Pass

BIO 210 Test 3 Questions With 100% Correct Answers | Latest Update 2026 | Guaranteed Pass Eccrine glands - answer-Sweat glands used for thermoregulation; found all over the body and produce watery sweat. Apocrine glands - answer-Sweat glands found in axilla and groin; activated at puberty and produce thicker secretions that cause body odor. Dermal papillae - answer-Fingerlike projections in the dermis that contain capillaries and form fingerprints. Epidermis - answer-Outermost skin layer; keratinized stratified squamous epithelium; avascular. Dermis - answer-Connective tissue layer containing blood vessels, nerves, glands, and hair follicles. Subcutaneous layer (hypodermis) - answer-Layer made of adipose and areolar tissue for insulation and shock absorption. Keratin - answer-Tough fibrous protein that waterproofs and protects the skin. Melanin - answer-Pigment produced by melanocytes that protects against UV radiation.Keratinization - answer-Process where skin cells fill with keratin, die, and move toward the surface. Stratum basale - answer-Deepest epidermal layer; contains dividing stem cells and melanocytes. Stratum corneum - answer-Outermost epidermal layer; made of dead, keratinized cells. Sebum - answer-Oily secretion from sebaceous glands that lubricates skin and hair. Pacinian corpuscles - answer-Deep pressure and vibration receptors located in deep dermis. Meissner's corpuscles - answer-Light touch receptors located in upper dermis. Hair follicles - answer-Structures made of epidermal epithelial cells that produce hair. Melanoma - answer-Malignant tumor of melanocytes; most dangerous type of skin cancer. Sebaceous glands - answer-Oil glands associated with hair follicles that secrete sebum. Osteomalacia - answer-Softening of bones due to vitamin D deficiency. Epiphyseal plate closure - answer-When growth plates ossify and bone length growth stops.Osteon - answer-Structural unit of compact bone containing central canal and concentric lamellae. Canaliculi - answer-Tiny channels connecting osteocytes in bone. Articular cartilage - answer-Hyaline cartilage covering the ends of bones at joints. Hematopoiesis - answer-Formation of blood cells in red bone marrow. Osteoblast - answer-Bone-building cell. Osteoclast - answer-Bone-resorbing (breakdown) cell. Osteocyte - answer-Mature bone cell that maintains bone tissue. Osteogenic cells - answer-Stem cells that differentiate into osteoblasts. Acromegaly - answer-Condition caused by excess growth hormone in adults leading to enlarged extremities. Compact bone - answer-Dense outer layer of bone made of osteons. Spongy bone - answer-Porous inner bone that contains trabeculae and marrow. Periosteum - answer-Dense irregular connective tissue covering outer bone surface. Long bone - answer-Femur; longer than wide.Short bone - answer-Carpals; cube-shaped bones. Flat bone - answer-Sternum; thin and protective. Irregular bone - answer-Vertebrae; complex shape. Sesamoid bone - answer-Patella; develops within tendons. Growth hormone - answer-Hormone that stimulates bone and tissue growth. Thyroid hormone - answer-Hormone that regulates metabolism and bone development. Estrogen - answer-Hormone that closes epiphyseal plates and maintains bone density. Testosterone - answer-Hormone that increases bone mass and stimulates growth. Ossification - answer-Process of bone formation. Endochondral ossification - answer-Bone development from a cartilage model. Intramembranous ossification - answer-Bone development directly from mesenchymal tissue. Vitamin A - answer-Regulates bone remodeling; excess weakens bones.Fracture - answer-A break in a bone. Greenstick fracture - answer-Incomplete fracture common in children. Comminuted fracture - answer-Bone breaks into multiple pieces. Spiral fracture - answer-Twisting fracture. Transverse fracture - answer-Straight-across break in bone. Compression fracture - answer-Crushed bone, common in vertebrae.