Chapter 1: Intro to Human Anatomy & Physiology Flashcards
Anatomy
branch of science dealing with the form and structure of body parts
Physiology
branch of science that studies body functions
Structures
the morphology of body parts - their forms & organizations
Functions
consideration of what body parts do and how they do it
Human Organism
the construction of anatomical structures into a well-organized unit, operating as a whole
Atoms
smallest particle of an element that has the properties of that element
Subatomic particles
small parts of an atom
Molecules
particle composed of two or more joined atoms
Macromolecules
a very large molecule
Cell
the basic unit of structure & function
Organelles
part of a cell that performs a specialized function
Tissue
a group of cells
Organs
group of different tissues
Organ system
groups of organs that function closely together
Organism
interacting organ systems
Metabolism
all of the chemical reaction in cells that use or release energy
Water
most abundant substance in the body - helps with transportation & regulation of body temp.
Food
substances that provide organisms with necessary chemicals/nutrients
Oxygen
gas making up about 1/5 of the air - used in the process of releasing energy from nutrients
Heat
a form of energy that is present in our environment - product of metabolic reactions + partly controls reaction rate
Pressure
an application of force on an object or substance
Internal environment
conditions & elements that make up the inside of the body, surrounding the cells
Homeostasis
the body’s maintenance of a stable internal environment
Homeostatic mechanisms
the body’s maintaining of homeostasis through a number of self-regulating control systems
Receptors
provides information about specific stimuli in the internal environment
Control center
includes a set point, tells what a particular value should be
Effectors
a muscle or gland that effects change in the body
Negative feedback
mechanism in which build up of a product causes suppression of its synthesis
Normal range
measurements or values obtained from a statistical sample of the healthy population for reference or comparison
Axial portion
pertaining to the head, neck, and trunk
Appendicular portion
pertaining to the upper & lower limbs
Cranial cavity
hollow space in the cranium containing the brain
Vertebral canal
hollow space within the vertebrae containing the spinal cord
Thoracic cavity
hollow place within the chest
Abdominopelvic cavity
space between the diaphragm and the lower potion of the trunk of the body
Viscera
organs found within a body cavity
Diaphragm
sheetlike structure largely composed of skeletal muscle and connective tissue that separates the thoracic & abdominal cavities
Mediastinum
the region separating the thorax into two compartments that contains the abdominal viscera
Abdominal cavity
space between the diaphragm and the pelvic inlet that contains the abdominal viscera
Pelvic cavity
hollow place within the ring formed by the sacrum & coxae
Serous membranes
membrane that lines a cavity without an opening to the outside of the body
pleural membranes
serous membrane that encloses the lungs and lines the chest wall