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HBHD 1 - Ch 1
Organization of the Human Body
Question | Answer |
---|---|
The study of the structure of an organism and the relationship of its parts | Anatomy |
The study of the functions of living organisms and their parts | Physiology |
The scientific study of disease | Pathology |
A systemic approach to discovery | Scientific Method |
A reasonable guess based on informal observations | Hypothesis |
Atom, Molecule, Cell, Tissue, Organ, Organ System, Organism | Levels of Organization |
Atoms and Molecules | The Chemical Level |
The smallest living units of the structure and function in the body. | Cells |
Organization of many cells that act together to perform one function | Tissues |
A group of several different kinds of tissues that work together to perform a specific function | Organs |
A group of various kinds of organs working together to perform complex functions of the body | System |
The body as a whole | Organism |
Position in which the body is lying face upward | Supine |
Position in which the body is lying face down | Prone |
Towards the head | Superior |
Towards the feet | Inferior |
Towards the front | Anterior |
Towards the back | Posterior |
Towards the belly | Ventral |
Towards the back | Dorsal |
Towards the midline | Medial |
Towards the side | Lateral |
Nearest the point of origin or the trunk of the body | Proximal |
Farthest from the point of origin or the trunk of the body | Distal |
Nearer the surface | Superficial |
Farther away from the surface | Deep |
A lengthwise plane running from anterior to posterior, dividing the body into left and right parts. | Sagittal Plane |
A unique type of sagittal plan that divides the body into equal halves | Midsaggital Plane |
Divides the body into anterior and posterior portions | Frontal (Coronal) Plane |
Divides the body into superior and inferior parts | Transverse Plane |
Skin; protects from injury and infection; hair, nails, sweat glands, and oil glands | Integumentary System |
The basic framework of the body | Skeletal System |
Attaches to bones and produce movement | Muscular System |
Glands grouped together because of a similar function, produce hormones which regulate body activities (growth, nutrient utilizations and reproduction) | Endocrine System |
Contains the heart and blood vessels; pumps blood through the body; carries oxygen; carries wastes from tissues for elimination | Cardiac and Vascular Systems |
Returns fluid from tissues to the blood - tonsils, thymus, and spleen. Has a role in immunity and absorption of fats and fluids | Lymphatic System |
Takes in air and conducts it to areas in the lungs for gas exchange. CV system take the O2 throughout the body and then brought back to the lungs for expulsion | Respiratory System |
Takes nutrients in and converts them into a useable form. Mouth, esophagus, stomach, small intestines, large intestines, liver, gallbladder, and pancreas....Works with Respiratory System | Digestive System |
Rids the body of waste products and excess water. Contains the kidneys, ureters, bladder, and urethra, Balances fluid volume within the body. | Urinary System |
External sex organs and related internal organs concerned with protection of offspring. | Reproductive System |
Relative constant state within our bodies | Homeostasis |
Detects alterations from normal functions and Reverses things back to the setpoint value in order to stabilize conditions. EX: Increased respirations during exercise to rid body of CO2 | Negative Feedback Loop |
Temporary amplifies the change occurring within the body, causing a rapid increase rate of events until something stops it. EX: rapid increase in contractions prior to delivery | Positive Feedback Loop |
Portion of the body that consists of the head, neck, and torso/trunk. | Axial Skeleton |
Consists of the upper and lower extremities | Appendicular Skeleton |
A degenerative process that results from disuse | Atrophy |
Detects the change in homeostasis | Sensor |
Works like a thermostat to maintain homeostasis | Control Center |
The level within the body which typically maintains homeostasis | Set Point |
When stimulated, works to correct the change within the body that has causes the shift which altered homeostasis. Automatically shuts off once things return to normal. | Effector |
Acts as a trigger | Stimulus |
A resulting physiological change | Response |
Internal body conditions that fluctuate frequently causing drifts away from homeostasis | Variable |