Flashcards in March 19, 2015 --> Misc. (137-150) Deck (19):
GLUT 1 function
Mediates glucose transport into red cells and throughout the blood brain barrier
GLUT 2 function
Provides glucose to the liver and pancreatic cells
GLUT 3 function
Main transporter in neurons
GLUT 4 location of expression
Expressed in muscle and adipose tissue and is REGULATED by insulin
GLUT 5 function
Transports FRUCTOSE in the intestine and testis
T of F, Arteriolar dilation decreases likelihood of edema
False, It increases the likelihood. A constriction of arterioles causes decreased capillary hydrostatic pressure and as a result, decreased net pressure across capillary wall. Therefore, the opposite occurs in Arteriolar dilation
4 conditions that cause extracellular fluid edema?
1. Increased capillary pressure (blockage of vein)
2. Decreased plasma colloid osmotic pressure (decreased plasma protein concentration)
3. Increased interstitial fluid colloid osmotic pressure (lymphatic obstruction)
4. Increased capillary permeability (certain allergic responses)
When does edema occur:
when the volume of interstitial fluid exceeds the capacity of the lymphatics to return the fluid to the circulation or the accumulation of fluid in a third space, such as the peritoneum, pleural cavity or pericardial sac.
Massive systemic edema is called what?
What is an oncogene
A defective gene that is involved in triggering cancer cell growth
4 examples of oncogenes
1. HER-2/neu: a growth factor receptor (30% of breast cancer)
2. ras: a signal transduction molecule
3. myc: a transcription factor (burkitt's lymphoma)
4. src: a protein tyrosine kinase (first ever discovered)
Organic part of bone matrix is mainly composed of what type of collagen?
What bonds are found between amino acid linkages?
- Peptide and disulfide bonds are examples of covalent bonds
T or F, The pitch is related to the frequency of the sound wave. In general, the higher the frequency of a sound wave, the higher the pitch of the sound wave
The loudness of a sound is related to what of the wave?
To the intensity and the amplitude of the wave
What is the 60-40-20 rule?
60% of body weight is water
40% of body weight is intracellular fluids
20% of body weight is extracellular fluids
What is the most potent mechanism for increasing heat production
Osmotic pressure of a solution depends on what?
The number of solute particles present and not on their various properties. For example: Sodium chloride will ionize into 2 ions per molecule whereas glucose will remain a single molecule in solution