Tissue Structures and Function Flashcards
What are the four broad categories of tissues in the human body?
epithelial, connective, muscle, and nervous tissues.
Why do tissues increase body efficiency?
body efficiency because different shapes and structures are better at carrying out different functions.
What are the general functions of epithelial tissue?
body’s first line of defense from physical, chemical, and biological wear and tear, controls the permeability of substances into the body, and is capable of secretion of mucous and other chemicals.
What are the primary functions of connective tissue?
- support and connect other tissues, protect delicate organs, - defend against microorganisms, transport fluid, nutrients, waste, and hormones,
- provide energy storage and insulation.
How is connective tissue classified?
connective tissue proper, supportive connective tissue, and fluid connective tissue.
What are the components of connective tissue proper?
fibroblasts, adipocytes, and mesenchymal cells, with fibroblasts secreting collagen, elastic, and reticular fibers.
What are the three types of muscle tissue and their characteristics?
Skeletal muscle is voluntary, striated, and multinucleate, attached to bones for movement. Smooth muscle is involuntary, spindle-shaped with a single nucleus, found in internal organs. Cardiac muscle is involuntary, branched, striated, with usually a single nucleus, forming the heart’s walls.
What are the characteristics of bone tissue?
Bone tissue is the hardest connective tissue, providing protection and support. It has a rigid matrix with collagen fibers and mineralized ground substance.
What is the difference between cancellous bone and compact bone?
Cancellous bone, or spongy bone, contains empty spaces and is found in the interior of bones. Compact bone is solid, providing greater structural strength and is the major component of most bones.
What are the components of blood and lymph?
Blood contains red blood cells, white blood cells, and platelets. Lymph contains white blood cells, collecting liquid from interstitial fluid and draining into blood vessels.
