respiratory zone
respiratory bronchioles, alveolar ducts, alveoli
What does the Respiratory Zone do?
Allow inhaled oxygen to diffuse into the
... [Show More] lung capillaries in exchange for CO2
Conducting Zone
nose, pharynx, larynx, trachea, bronchi, bronchioles
What does conducting zone do?
conducts air to respiratory zone, humidifies, warms, and filters air
Most common cancer mutation?
Acquired
What does anticholinergic mean?
blockade of muscarinic receptors - This inhibits nerve impulses responsible for involuntary muscle movements and various bodily functions
What does dopamine do?
influences movement, learning, attention, and emotion. Dopamine enables neurons in your brain to communicate and control movement.
What does messenger RNA do?
Transcribes information from the DNA in the nucleus and carries it to the cytoplasm, and then to the ribosome. Single-stranded, intermediate molecule. Carries the instructions for making proteins.
What do ribosomes do?
Make proteins (protein synthesis)
Neurotransmitters
chemical messengers that cross the synaptic gaps between neurons
Neurotransmitters at the parasympathetic postganglionic synapses
Acetylcholine and nitric oxide
Atropine Neurotransmitters
Atropine is a muscarinic receptor antagonist that is used to inhibit the effects of excessive vagal activation on the heart, which is manifested as sinus bradycardia and AV nodal block. Therefore, atropine can temporarily revert sinus bradycardia to normal sinus rhythm and reverse AV nodal blocks by removing vagal influences.
alpha adreneric receptors
...
Beta-adrenergic receptor blockers
-Blocks NE/Epi effects on heart - less Ca++ entry
-Decreases force of cardiac contractions
What do anticholinergics do?
Decrease the activity of acetylcholine (neurotransmitter that regulates movement)
Atropine
muscarinic antagonist (anticholinergic)
beta-adrenergic receptors
Portions of the nervous system that, when stimulated, can cause an increase in the force of contraction of the heart, an increased heart rate, and bronchial dilation.
alpha-adrenergic receptors
Portions of the nervous system that, when stimulated, can cause constriction of blood vessels.
arachnoid meninges
middle layer - network of fibers and collagen that are part of the suspension system that helps protect the brain and spinal cord from sudden impact
arachnoid meninges layer function
contains spinal fluid - connects dura mater and pia mater. network of fibers and collagen that are part of the suspension system that helps protect the brain and spinal cord from sudden impact
Blood Brian Barrier
The barrier system that restricts the passage of various chemicals and microscopic entities [Show Less]