UNIT 1- INTRODUCTION Flashcards
(33 cards)
what does dorsal cavity contain?
UPPERSIDE
- cranial cavity = skull + brain
- spinal cavity = vertebral column + spinal cord
- meninges = lines spinal cord + brain
what are BODY CAVATIES?
Spaces inside our body that protect, separate+ maintain internal organs
what does thoracic cavity contain?
- abdominopelvic cavity - surperior + inferior
- diaphragm
- mediastinum = membranous partition
- pleural cavity
- pericardial cavity
- serous membranes
what do serous membranes do?
line several body cavities, + secrete a lubricating fluid which reduces friction from muscle movement
which are the serous membranes? 3
- pleura = lines organs
- pericardium =lines heart
- peritoneum =lines cavity of heart
peritoenium visceral and parietal layer ?
visceral -adheres to organ
paretal -adheres to walls of cavity
what is Retroperitoneal ?
organs behind the peritoneum
how many regions and quadrants does the abdominopelvic cavity have?
9 regions 4 quadrants
what are the 9 regions of the abdominopelvic cavity?
- hypochondriac R
- epigastric
- hypochondriac L
- UMBILICAL
- iliac R
- iliac L
- hypergastric
what defines a living organism?
-virus, bacterium, protist, fungus , plant or animal
- can differentiate
- metabolism (anabolism + catabolism)
- . can move
- can grow
- homeostasis
- reproduce
what is a cell
smallest structure and functional unit of a living organism + can replicate independently (itself)
what is a tissue?
group of similarly specialised cells. With substance surrounding them sharing the same embryological layer+ perform special functions e.g connective tissue, nervous + epithelial
molecular bio?
atoms and mols
histology?
tissues
ecology?
population, ecosystems, biosphere
ENDOCRINE SYSTEM?
organs=pituitary gland,thyroid, pancreas—
Function =metabolism+ structural changes
what are the basic vital processes?
- growth
- differentiation
- reproduction
- metabolism
- responsiveness (stimuli)
- movement
what is HOMEOSTASIS?
condition of the equilibrium of internal environment due to the bodies regulatory process
what are properties of homeostasis ?
- regulation>endocrine (hormones) + nervous system (electric impulses)
- Tonic ( slow )level of activity = agent may have moderate activity that can vary slightly
- antagonic control
homeostatic fluids = 5 ?
- intracellular fluid
- extracellular fluid
- interstitial fluid (tissue fluid ) between cells
- plasma
- transcellular fluid
what is transcellular fluid?
portion of total body water contained within epithelial lined spaces
which molecules are intracecullarly higher? 2
- potassium as too big to pass bilayer
- Ca (2nd msgr substance whose release within a cell is promoted by a hormone )
which molecules are extracecullarly higher
Na + cl
how does fluid move via osmosis?
higher water potential to lower through semipermeable membrane
