50 Questions
Which type of muscle tissue is characterized by being multinucleate, long cylindrical cells with peripheral nuclei, striated, and voluntary?
Skeletal Muscle
In which phase of deep wound healing does granulation tissue form and fibroblasts secrete collagen fibers to fill the gap?
Organization phase
Which cell type in the epidermis is responsible for producing the pigment melanin?
Melanocytes
What is the function of smooth muscle tissue in the body?
Constricts or narrows lumens of blood vessels
Which layer of the skin is composed of epithelial cells and serves as the outermost layer?
Epidermis
What is the function of Cardiac Muscle in the body?
Propels blood from heart to tissues
Which part of nervous tissue transmits electrical signals from sensory receptors to effectors in the body?
Neurons
What is a characteristic feature of smooth muscle cells?
Centrally located nucleus
Which phase of tissue repair involves scab formation, migration of epithelial cells beneath it, and fibroblasts secreting collagen fibers?
Organization phase
What cells are responsible for producing the fibrous protein keratin in the epidermis?
Keratinocytes
Which type of exocrine gland accumulates its product until the gland ruptures during secretion?
Holocrine gland
What do proteoglycans in the ground substance of connective tissue mainly consist of?
Protein core attached to glycosaminoglycans
Where are chondrocytes mainly found within the cartilage?
In the lacunae
Which connective tissue type is primarily responsible for attaching muscles to bones and withstanding high stress?
Dense regular connective tissue
What is the main function of elastic cartilage in the body?
Maintains shape with flexibility
Which statement best describes the function of areolar connective tissue?
Cushion organs and regulate immunity
In which connective tissue type do fibroblasts play a crucial role in secreting matrix and fibers?
Dense irregular connective tissue
'Yellow fibers' in connective tissue are primarily composed of which protein?
Elastin
What is a shared characteristic of merocrine and apocrine glands?
Both types secrete product by exocytosis.
What is the primary cell type found in dense irregular connective tissue?
Fibroblasts
Which layer of the epidermis is only found in thick skin?
Stratum Lucidum
What is the main function of the stratum granulosum in the epidermis?
Contain waterproofing glycolipids
Which layer of the dermis is composed of dense irregular connective tissue?
Reticular layer
What gives fair skin a pinkish color?
Hemoglobin in dermal capillaries
Which type of sweat glands are far more numerous in humans?
Eccrine sweat glands
What is the main function of sebum secreted by sebaceous glands?
Prevent water loss from skin
Which skin appendage secretes cerumen (earwax) to deter insects and block foreign material?
Ceruminous glands
What is the main role of melanin in the skin?
Protect cell nucleus from UV light-induced mutations
What is the primary component of sweat secreted by eccrine sweat glands?
Metabolic wastes
What is the genetic basis for unique fingerprint patterns on palms and soles?
Dermal ridges caused by areolar connective tissue
Where are gap junctions found and what is their function?
Between muscle cells to aid in communication
In which type of epithelial tissue would you find cilia or microvilli, and what are their functions?
Simple columnar - for absorption and secretion of mucus
Where would you find stratified columnar epithelial tissue and what is its primary function?
In the male urethra for protection
What is the main characteristic that distinguishes stratified squamous epithelial tissue from other types of epithelial tissues mentioned?
Multiple layers
Where would you expect to find pseudostratified columnar epithelial tissue and what differentiates it from simple columnar epithelial tissue?
In the trachea with different heights of cells and nuclei at different levels
Which type of epithelial tissue aids in stretching and distending urinary organs?
Transitional epithelium
What distinguishes simple squamous epithelial tissue from other types of epithelial tissues in terms of cell shape?
Flattened cells
Which type of glandular epithelial tissue releases products into ducts?
Exocrine glands
What is the function of sebum from the sebaceous glands?
helps prevent skin and hair from drying out
What is the function of endocrine glands?
Release products into the bloodstream
What is the main function of Langerhans cells in the epidermis?
Protect against infection
What does avascular but innervated mean in relation to epithelial tissues?
Lack of blood supply but presence of nerves
Which of the following is NOT a function of the skin?
Blood filtration
What is the primary purpose of the arrector pili muscle associated with hair follicles?
Raise the hair
Which skin layer is responsible for producing new hair growth?
Hair matrix
What is the visible portion of the nail known as?
Nail body
What skin modification releases lipids that help protect against water loss and microbial invasion.
Lamellar granules
Which skin layer contains melanocytes that produce color for hair?
Dermis
What is the primary cause of alopecia?
Aging and hormonal changes
Which skin condition is characterized by destruction of the epidermis and part of the dermis?
Second-degree burn
Test your knowledge about the structure and function of synovial membranes in freely movable joints and serous membranes like pleura, pericardium, and peritoneum. Learn about the visceral and parietal layers, synovial fluid, and their roles in reducing friction and providing lubrication.
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