General Biology: Definitions and explanations page 15 PDF | Download eBooks
Learn general biology terms with definitions and explanations, biology terminologies (Page 15) for biology degree programs.
- What is Polarity of epithelia?
The apical surface faces the lumen (cavity) or outside of the organ and is therefore exposed ... - What is Connective tissue?
Connective tissue (ct) is one of the four basic types of animal tissue, along with epithelial ... - What is Loose connective tissue?
Loose connective tissue is a category of connective tissue which includes areolar tissue, reticular tissue, and ... - What is Blood?
Blood is a body fluid in humans and other animals that delivers necessary substances such as ... - What is Fibrous connective tissue?
Fibrous connective tissue is a type of connective tissue which is composed of parallel bundles of ... - What is Adipose tissue?
Adipose tissue, or fat, is an anatomical term for loose connective tissue composed of adipocytes. its ... - What is Bone?
Bone-forming cells called osteoblasts deposit a matrix of collagen. calcium, magnesium, and phosphate ions combine into ... - What is Cartilage?
Cells called chondrocytes secrete the collagen and chondroitin sulfate, which together make cartilage a strong yet ... - What is Smooth muscle?
Smooth muscle is an involuntary non-striated muscle. it is divided into two subgroups; the single-unit (unitary) ... - What is Cardiac muscle?
Cardiac muscle is one of three types of vertebrate muscles, with the other two being skeletal ... - What is Nervous tissue?
The nervous tissue is also called neural tissue or nerve tissue. it is the main tissue ... - What is Glia?
Glia, also called glial cells or neuroglia, are non-neuronal cells in the central nervous system and ... - What are Neurons?
A neuron, also known as a nerve cell, is an electrically excitable cell that communicates with ... - What are Hormones?
A hormone is any member of a class of signaling molecules produced by glands in multicellular ... - What is Conformer?
Conformers must change their environment to survive temperature variations. the older term - cold-blooded - is ... - What is Regulator?
Regulators regulate their bodies to remain at a relatively constant temperature. while in the past such ... - What is Homeostasis?
Homeostasis is the state of steady internal physical and chemical conditions maintained by living systems. this ... - What is Positive feedback?
Positive feedback is a process in which the end products of an action cause more of ... - What is Acclimatization?
Acclimatization or acclimatization (also called acclimation or acclimatation) is the process in which an individual organism ... - What is Thermoregulation?
Thermoregulation is the ability of an organism to keep its body temperature within certain boundaries, even ... - What is Endothermic?
An endotherm has the ability to maintain a constant body temperature independent of the environment. the ... - What is Ectothermic?
An ectotherm is an organism in which internal physiological sources of heat are of relatively small ... - What is Poikilotherm?
A poikilotherm is an animal whose internal temperature varies considerably. it is the opposite of a ... - What is Homeotherm?
Warm-blooded animal species can maintain a body temperature higher than their environment. in particular, homeothermic species ... - What is Integumentary?
The integumentary system comprises the skin and its appendages acting to protect the body from various ... - What is Insulation?
For mammals without hair, insulation is accomplished by blubber, a thick layer of fat tissue which ... - What is Counter current exchange?
Counter current exchange is the mechanism by which some property of a fluid, such as heat ... - What is Thermogenesis?
Thermogenesis is the process of heat production in organisms. it occurs in all warm-blooded animals, and ... - What is Nonshivering thermogenesis?
Nonshivering thermogenesis is defined as an increase in metabolic heat production (above the basal metabolism) that ... - What is Fever?
A fever is a body temperature that is higher than normal. a normal temperature can vary ... - What are Bioenergetics?
Bioenergetics is a field in biochemistry and cell biology that concerns energy flow through living systems. ... - What is Metabolic rate?
Metabolism comprises the processes that the body needs to function. basal metabolic rate is the amount ... - What is Torpor?
Torpor is a state of decreased physiological activity in an animal, usually by a reduced body ... - What is Hibernation?
Hibernation is a state of inactivity and metabolic depression in endotherms. hibernation refers to a season ... - What is Hypothalamus?
The hypothalamus is a portion of the brain that contains a number of small nuclei with ... - What is Nutrition?
Nutrition is the science that interprets the interaction of nutrients and other substances in food in ... - What are Carnivores?
A carnivore is an organism that derives its energy and nutrient requirements from a diet consisting ... - What are Vitamins?
A vitamin is an organic molecule (or related set of molecules) that is an essential micronutrient ... - What are Minerals?
In the context of nutrition, a mineral is a chemical element required as an essential nutrient ... - What is Malnutrition?
Malnutrition is a condition that results from eating a diet in which one or more nutrients ... - What is Undernutrition?
Undernutrition denotes insufficient intake of energy and nutrients to meet an individual's needs to maintain good ... - What is Epidemiology?
Epidemiology is the study and analysis of the distribution and determinants of health and disease conditions ... - What is Ingestion?
Ingestion is the consumption of a substance by an organism. in animals, it normally accomplished by ... - What is Digestion?
Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules so that ... - What is Absorption?
Absorption of nutrients mostly occurs in the small intestine. digestion and absorption begins in your mouth ... - What is Elimination?
Elimination is also defecation. defecation is the final act of digestion, by which organisms eliminate solid, ... - What is Substrate feeder?
Substrate feeders dwell in or on their food source. leaf miners are tiny substrate-feeding insects that ... - What are Fluid feeders?
Fluid feeders suck nutrient-rich fluids from a living host. fluid feeders may also be herbivores or ... - What are Bulk feeders?
Most animals are bulk feeders. they eat relatively large pieces of food. many vertebrates, including ourselves, ... - What is Gastrovascular cavity?
The gastrovascular cavity is the primary organ of digestion and circulation in two major animal phyla: ... - What is Alimentary canal?
The alimentary canal is also called the gastrointestinal tract is an organ system within humans and ... - What is Peristalsis?
Peristalsis is a radially symmetrical contraction and relaxation of muscles that propagates in a wave down ... - What is Sphincter?
A sphincter is a circular muscle that normally maintains constriction of a natural body passage or ... - What is Oral cavity?
In animal anatomy, the mouth is also known as the oral cavity or the buccal cavity. ... - What are Salivary glands?
The salivary glands in mammals are exocrine glands that produce saliva through a system of ducts. ... - What is Amylase?
Amylase is a protein made by our pancreas and also by the glands in and around ... - What is Mucus?
Mucus is a slippery aqueous secretion produced by, and covering, mucous membranes. mucus serves to protect ... - What is Bolus?
A bolus is a ball-like mixture of food and saliva that forms in the mouth during ... - What is Pharynx?
The pharynx is the part of the throat behind the mouth and nasal cavity, and above ... - What is Esophagus?
The esophagus or esophagus, commonly known as the food pipe or gullet, is an organ in ...