chapter 3 Flashcards
what do body compartments allow for
separating of biological contents and function between spaces
what is the main advantage of compartments
specialization of function
what is the main disadvantage of compartments
barriers between areas
- issues with transport and communication between compartments
- cells have developed mechanisms to solve issue though
what are the 3 body compartments
- cranial cavity
- thoracic cavity
- abdominal cavity
what is in the cranial cavity
brain and spinal cord
what is in the thoracic cavity
- pleural cavity/sac: lungs
- pericardial cavity/sac: heart
what is in the abdominal cavity
- digetsive organs
- pelvic cavity: digestive and reproductive organs
what are the two fluid compartments
- Extracellular Fluid (ECF)
- Intracellular fluid (ICF)
what is extracellular fluid
- interstitial fluid (surrounds cells)
- Plasma: fluid of blood
what are the main functions of the cell membrane
- physical isolation
- regulation of exchange of connects with the environment
- communication between cell and it’s environment
- structural support
what is the cell membrane mainly composed of
- lipids
- proteins
- small amount f carbohydrates
what type of lipids does the cell membrane contain
- phospholipids: primary lipid
- cholesterol
- sphingolipids
what are the three membrane protein categories
- integral proteins
- peripheral proteins
- lipid-anchored proteins
what are integral proteins
transmembrane proteins that extend all the way across the cell membrane
what are peripheral proteins
non-covalently attached to integral proteins or phospholipid heads
- includes enzymes, structural binging proteins
