| Term | Definition |
|---|
| homeostasis | the maintenance of stable conditions in an internal environment |
| set point | a reference point |
| positive feedback | amplifies a response; increases deviation from a set point |
| negative feedback | returns back to a set point |
| tissue | a group of cells tht have the same shape and function |
| organ | several tissues for the same purpose |
| organ system | organs funtioning together |
| epithelial | tissue made of sheets of closely packed cells |
| connective | tissue made of sparse cells in extracellular matriz |
| muscle | tissue made of long cells (fibers) with contractile proteisn |
| nervous | tissue made of neurons with branching extensions |
| epithelial | tissue for protection, exchange, and secretion |
| connective | tissue for binding and support of other tissues |
| muscle | tissue for movement of body parts |
| nervous | tissue for transmission of nerve signals |
| squamous | epilthelial structure squashed |
| cuboidal | epithelial structure cubic |
| columnar | epithelial tissue like columns |
| connective tissues | loose, fibrous, adipose, cartilege, bone, blood |
| cartilage | provides structural support yet flexible; has chondracytes; cells that secrete the extracellular matrix |
| bone | provides support and is hardened by calcium phosphate deposition in the matrix |
| adipose tissue | includes cells that form and store lipids |
| blood | consists of cells in a very liquid extracellular matrix, plasma |
| neurons | they encode information as electrical impulses that travel over axons to their targets |
| glia | provide support for neurons |
| ectotherm | have external sources of heat |
| endotherm | regulate temperature by producing heat metabolically |
| heterotherms | can behave either as ectothem or an endotherm |
| endocrine | system that controls bodily funtions by hormones |
| skeletal and muscular | two systems that support and move the body |
| circulatory | systems that transport the food and oxygen |
| respiratory | system that absorbs oxygen and releases carbon dioxide |
| integumentary | systems that covers and protects the body |
| excretory | system that disposes of certain wastes |
| lymphatic and immune | two systems that protect the body from infection and cancer |
| reproductive | system that perpetuates the species |
| digestve | system that absorbs food |
| nervous | system that controls body function through chemical and electrical impulses |
| epidermis | surface layer of the skin |
| dermis | inner layer of the skin |
| epidermis | layer of skin that resists water damage, decreases water loss, and prevents penetration by microbes |
| dermis | layer of skin that contains sensory informaitnon, synthesis of vitamin D, and body temperature regulation |
| diastole | when blood flows from veins into heart chambers |
| systole | when blood flows from atria into ventricles |
| heart murmur | defect in one or more of the heart valves |
| SA node | pacemaker that sets the rate of heart contractions by generating electrical signals in the atria |
| AV node | relays the signals to the ventricles from the atria that control the rate of heart contractions |
| plasma | contains various inorganic ions, proteins and nutrients, wastes and gases, hormones |
| erthrocytes | red blood cells |
| leukocytes | white blood cells |
| plateletes | responsible for blood clotting |
| leukocytes | basophil, eosinophil, lymphocyte, neutrophil, monocyte are examples of... |
| serum | blood without the clotting factors |
| stem cells | divide in bone marrow and are used to produce all the types of blood cells throughout life. used to treat some blood disorders |
| thrombocytes | platelets |
Combine with other sets
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