P1 YEAR Flashcards
What is the Primary Structure in Proteins?
Definition
Oligopeptide sequnce, planar due to bond character in resonance structure
What is the Secondary Structure in Proteins?
Definition
Polypeptides arrange into secondary structures and are sequence dependent, form spontaneously, and are formed and stablized by hydrogen bonding
What are the components in a Secondary Structure?
- Alpha Helix
- Beta Sheet
- Beta Turns
What is an Alpha Helix?
Definition
Forms by hydrogen bonding between carbonyl oxygen and n+4 amino hydrogen
What is a Beta Sheet?
Definition
Stabilized through hydrogen bonding between adjacent strands (may be parallel or antiparallel)
What is a Beta Turn?
Definition
Cause a 180 degree turn in the polypeptide backbone stabilized by hydrogen bonding between 1st and 4th residue of the turn often include PROLINE and GLYCINE
What is a Type 1 Beta Turn?
Definition
PROLINE lots of steric hindrance
What is a Type 2 Beta Turn?
Definition
GLYCINE rotational freedom
What is the Tertiary Structure of a Protein?
Definition
Form by assembly of secondary structures, it may form a recognizable pattern
Motif
What is the Quaternary Structure of a Protein?
Definition
Composed of two or more polypeptide chains, peptides making up multimer may be either identical or nonidentical will often have an axis symmetry
ex. collagen
What is the Active Site of an Enzyme?
Definition
A specific region on an enzyme where the substance are bound
List the Properties of the Active Site on an Enzyme
- Small part of total volume of enzyme
- Bound to substrates via multiple weak, reverible attractions such as hydrophobic interactions, ionic interactions, hydrogen bond
List the Macronutrients
- Proteins
- Carbohydrates
- Lipids
Define Protein
Definition
Provide essential nitrogen, carbons, electrons as well as essential amino acids that body cannot synthesize
Define Carbohydrates
Definition
Carbons and Electrons, no essential carbs
Define Lipids
Definition
Carbons, electrons, and essential lipids that the body cannot synthesize
What pathway is this: Carbohydrates to Glucose?
Central Pathway: Glycolysis leading to produce Acetyl CoA
What pathway is this: Proteins to Amino Acids?
Amino Acids can also lead to Acetyl CoA
Precursor to producing glucose
What pathway is this: Fats to Glyceral/Fatty Acids?
Beta Oxidation also leads to Acetyl CoA
Glycerol: precursor to producing glucose
Why is Acetyl CoA is so important?
Acetyl CoA goes through Krebs Cycle/ETC to produce CO2, H2O, and ATP
List Membrane Properties
Definition
- Dynamic and Flexible
- Can exist in various phases/transitions
- NOT permeable to large polar solutes or ions
- Permeable to SMALL polar solutes and nonpolar compounds
Depending on their compositions/temperature, the lipid bilayer can exist in what TWO phases?
- Gel Phase
- Fluid Phase
What is the Gel Phase?
Definition
Liquid ORDERED State: individual molecules do NOT move around
What is the Fluid Phase?
Definition
Liquid DISORDERED State: individual molecules CAN move around
Membrane Fluidity: is determined mainly by fatty acid compositon and melting point, more fluid membranes require what?
SHORTER and MORE UNsaturated fatty acids
Melting Temperature DECREASES as what?
Double Bonds are ADDED
At lower temps, cells need more unsaturaed FA
Melting Temperatues INCREASES with what?
LENGTH of SATURATED fatty acids
At higher temps, cells need more long, saturated FA
What is Lateral Diffusion?
Definition
- Indiviudal lipids undergo fast uncatalyzed later diffusion within the layer
- Lipids can move around laterally
What is Transverse Diffusion?
Definition
- Spontaneous flips from one layer to another are rare because the charged head group must transverse the hydrophobic tail region of the membrane
- Flipases
What are Flipases?
Definition
- Special enzymes that catalyze the transverse diffusion
- Unique unidirectional and bidirectional enzymes to catalyze lipid movement
- Some flipases use energy of ATP to move lipids against the concentration gradient
DEA Numbers
Definition
2 Letters followed by 7 Numbers
How to CHECK a DEA Number?
- Add numbers #1, 3, 5 together
- Add numbers #2, 4, 6 together and multiply by 2
- Add the first and second calculated number together and make sure that matches the last digit
Superscription
Definition
Take Thou
Inscription
Definition
Drug Name and Strength
Subscription
Definition
Directions to the Pharmacist
Sigma
Definition
Directions to the Patient
NDC Numbers
NON-INSURANCE
10 Digit
1st Seg = Labeler Code
2nd Seg = Product Code
3rd Seg = Package Code
NDC Numbers
INSURANCE
11-Digit
5-4-2 format
DAW Codes 0-2
0: no product selection
1: substitution not allowed by provider
2: substitution allowed, patient requested product dispensed
1 Dram = what?
Teaspoon = 5 mL
1 oz = what?
30 g = 30 mL
16 oz = what?
1 pint = 1 pound = 480 grams
Tablespoon = what?
15 mL
1 grain = what?
60 mg
What is Down-Regulation?
Definition
Response of a system to DECREASE the response of the cell due to excessive stimulation by an agonist.
The response can be due to decreased number of recepetors or uncoupling of the receptor from the sign transduction mechanism or both.
Involved in mechanisms of TOLERANCE
What is Up-Regulation?
Definition
The response of a system to increase the response of the cell to a LACK of stimulation by an AGONIST.
The response can be due to either anincrease in receptor number of enhanced coupling of the receptor to the signal transuciton or both.
Involved in mechanisms of SUPERSENSTIVITY
What is Cranial Nerve I?
Olfactory Nerve
ONLY sensory/afferent, goes to olfactory bulb/cortical area
What is Cranial Nerve II?
Optic Nerve
ONLY sensory
How does the Optic Nerve II work to transmit?
- Photoreceptors in the retina transmit visual info to the bipolar cells in the retina.
- Bipolar cells synpase on ganglion cells which have their cells bodines in the retina
- Axons of ganglion cells leave the eyeball and form optic nerves
- Eyeball to Optic Chiasm
- Optic Chaism to Brain
Bipolar Cells
Definition
Primary Sensory Neurons
Do not fire impulses, send info via GRADED signal changes
Ganglion Cells
Definition
Secondary sensory neurons
Eyeball to Optic Chiasm
Definition
Optic Nerve
X Shaped Structure
Optic Chiasm to Brain
Definition
Optic Tract
Posterior diencephalon synapse on lateral GENICULATE nucleus of thalamus
What is Optic Nerve III?
Oculomotor Nerve
Innervates eye muscles, motor AND sensory
Where is the nucleus of the Oculomoter Nerve III?
Exits from the midbrain, nucleus is in the ROSTRAL MIDBRAIN
What type of innervations are possible with Cranial Nerve III?
- Medial Rectus: adduction toward the nose
- Inferor Rectus + Superior Oblique: moves eye down
- Superior Rectus + Inferior Oblique: moves eye up
What is Cranial Nerve IV?
Trochlear Nerve
Motor and Sensory
Where is the nucleus of Trochlear Nerve IV?
Nucleus is in the CAUDAL part of MIDBRAIN
Innervates SUPERIOR OBLIQUE
What Cranial Nerve is the ONLY one to exit DORSALLY?
Trochlear Nerve IV
What is Cranial Nerve V?
Trigeminal Nerve
Sensory FACE and Motor CHEWING
The Trigeminal Nerve V arises from the pons and then the trigeminal ganglion, what are the 3 Divisions of the nerve that leave the ganglion?
- Opthalmic V1: SENSORY
- Maxillary V2: SENSORY
- Mandibular: SENSORY AND MOTOR
What is the ONLY structure in the CNS that uses electrical synapses and not chemical?
Trigeminal Mesencephalic Nucleus
What is Cranial Nerve VI?
Abducens Nerve
Motor and Sensory
CAUDAL Pons
What is Cranial Nerve VII?
Facial Nerve
Motor, Sensory, and PNS
What elements does Facial Nerve VI control?
- Motor: facial expression
- PNS: salivary and lacrimal glands
- Sensory: skin of ear, taste buds