chapter 1 Flashcards
Anatomy:
Gross anatomy:
Microscopic anatomy:
Study of body structures and their relationships to one another.
Study of relatively large structures visible with unaided eye.Microscopic
Study of structures that need magniCcation to be viewed
Six levels of structural organisation of human body:
Chemical level Cellular level Tissue level Organ level Organ system level Organism level.
Homeostasis:
The maintenance of relatively stable conditions within the internal environment Ultimate cause of death is homeostatic imbalance
Feedback loop:
The cycle of events which ensure the status of a body condition is stable
Homeostasis steps:
normal temp— receptors (skin)— control center ( brain)— effectors (receive outputs from the control center to produce a response that changes the conditions )
Negative feedback loop
improves the situation and reverse it if need it eg: temperature control.
Positive feedback loop
maintains/ enhances and amplifies the situation eg: blood clotting
Prone position:
Supine position:
Subject lying face down.
Subject lying face upwards
Microbiology:
Study of microbes.
Ubiquitous:
A term used to describe microbes being found everywhere
Pathogens:
Non-pathogens:
Disease-causing microorganisms
Microbes that do not cause disease.
Gram-positive bacteria:
Gram-negative bacteria:
Thick layer of peptidoglycan, with no outer layer to the membrane.
Thin layer of peptidoglycan. with a outer and inner layer of membrane,
Binary Fission:
The reproductive process of Procaryotic cells
Taxonomy:
how organisms are classified and how it gets identified
Gram-stain:
Method used to classify bacteria based on their cell wall. Blue/purple means cell is gram-positive (due to thick layer of peptidoglycan). Red means bacteria is gram-negative due to a thinner layer of peptidoglycan.
