Random Q's Flashcards
Write down Fick’s law of diffusion
V gas = A/T x D x (P1 - P2)
What is not a component of blood? Plasma Hematocrit Mitochondria Buffy coat
Mitochondria
What variable does not effect the oxyhaemoglobin dissociation curve?
Temperature
Ph
PCO2
Nitrogen
Nitrogen
What is the average internal body temperature?
36.5 - 37.5
Where is the thermoregulatory centre in the brain?
Hypothalamus
What is the term for when the internal body temperature goes below 35 degrees?
Hypothermia
What is not involved in the conducting zone? Trachea Alveolar sacs Bronchial tree Terminal bronchioles
Alveolar sacs
What happens to the diaphragm during inhalation?
Flattens and elevates dome when relaxed
Which of these is not a sensory neuron? A. Baroreceptor B. Chemoreceptor C. Proprioceptor D. Efferentreceptor
Efferentreceptor
What happens when the voltage gated Na+ open (-55mV) and sodium floods in?
Depolarisation
Where is the golgi apparatus located?
In the cytoplasm
What is the golgi apparatus?
The Golgi apparatus receives proteins and lipids (fats) from the rough endoplasmic reticulum. It modifies some of them and sorts, concentrates and packs them into sealed droplets called vesicles.
Approximately how many nuclear pores does the nucleus contain?
Roughly 3000
What type of cell does NOT have a membrane bound nucleus?
A. Erythrocyte
B. Eukaryotic
C. Monocyte
D. Prokaryote
Prokaryote
How many genes do humans have?
25,000
What is the role of the smooth endoplasmic reticulum?
Synthesis of lipids and steroids
What is convection?
Heat transfer form air to water
What pH do lysosomes work best at?
5
What are the three kinds of cytoskeleton filaments?
Microfilaments
Intermediate filaments
Microtubules
What does simple diffusion allow passage of?
Only non polar molecules down the conc gradient
What is the resting potential of skeletal muscle?
-70mV
Which of these is not a nerve fibre group?
a) A-Beta
b) D- Delta
c) C-Nerve fibres
d) A-Delta
D-Delta
Which is not a membrane ion channel?
a) Leakage Channels
b) Membrane Gate Channels
c) Voltage-gated Channels
d) Ligand-Gated Channels
Membrane gate channels
What is the action potential progation speed of A fibres?
130 m/s
What is the formula for partial pressure?
PP = % Concentration x total pressure of
mixture
What is the percentrage of protein in blood plasma?
7%
What is the percentage of bicarbonate ions transported in the blood?
70%
Which factor does not affect haemoglobin O2 affinity?
a) Acidity
b) Blood flow
c) Temperature
d) 2,3, BPG
Blood flow
