Home > Anatomy, Uncategorized > Introduction to Human Anatomy Lecture 4

Introduction to Human Anatomy Lecture 4

Overview

Today is a 28 minute lecture on the regulation of the human body temperature.

Details

3 Major Sources of Body Heat

Most of the heat of the body comes from cellular respiration.  Over 60% of the energy of the reaction goes into heat, the rest into making ATP.

Muscular activity is another source and the frictional heat of motion.  Rate of ATP production increases.

Assimilation of food, the processing of food.  Digestion, absoprtion, processing nutrients

3 Major Ways of Losing Heat

Cutaneous vasodilation – how much warm blood flows in out skin.  Dialate to let heat out, constrict to heat up.

Sweating – the sweat has to evaporate to have a cooling effect.

Exhaling – the air we exhale leaves at 98 F.  Panting, like dogs do.

We need a constant body temperature.  The hypothalamus is the thermostat.  If cold, constrict veins and stimulate shivering.

Maintaining the set point.  Thermoreceptors send information of the temperature.  If temperatures don’t match, an effector signal is sent.   The temperature oscillates about the set point before effectors are called.

You can stop shivering anytime you want.  It’s an “idiot override.” You can jog in place and move around.  When you stop, you’ll begin shivering.

Thyroxin and adrenaline are two hormomes that increase metabolic rate and cellular respiration.  Thyroxin comes from the thyroid, adrenaline from the adrenals.  They are implicated in acclimatization.

Humans are not dogs.  If cold, we can put on a sweater or turn up the heater.  We don’t necessarily need internal mechanisms.

For hot weather, thyroxin and adrenaline go down.  For cold weater, they tend to go up gradually.

Review

Ballistic programs:Pejsa/Manges/6 DOF

Internal/external/terminal ballistics

Choke affects windpipe, strangle affects arteries

Tissue: muscular, nervous, epithelial, connective

Epithelial: simple/stratified/pseudo  cuboidal/columnar/squamous

Lewis acids accept electrons, lewis bases donate electrons

CTL SC cervical thoracic lumbar saccral coccygeal 7 12 554

Brainstem: midbrain, pons, medulla oblongata

Brain: cerebrum, cerebellum, brainstem

Pineal Gland: seratonin, melatonin

Layers: dia/arachnoid/pia mater

X = fluorine, chlorine, bromine, iodine, astatine (radioactive, no stable isotopes)

Ambush – deploy, suppress, report

n1sin01 = n2sin02

SN2 = inversion of stereochemistry

Nice-Manipulative-Assertive-Aggressive-Assaultive-Murderous

L Chatlier – add reactants/products, volume, pressure, temperature

Successful Ambush: Surprise , Speed, Violence of Action

Aging: oxygen, UV light, water, heat

A = a l c

Electronegativity: NOF Cl Kr

Alkane CnH2n+2

Alkene CnH2n

Alkyne CnH2n-2

Most important cyclic molecules: Benzene C6H6/Naphthalene C10H8

Moving formations: column line wedge vee eschelon

When not moving: herring bone and coil

Transversing Terrain: traveling, traveling overwatch, bounding overwatch

breaking bonds takes energy, making bonds releases energy

Loads on average were: – fighting load: 63 lbs – approach march load: 101 lbs – emergency approach march load: 132 lbs

One well-established norm is that a soldier cannot sustain a load greater than one-third of his body weight over time.

Noble gases: He, Ne, Ar, Kr, Xe, Rd

Types of bonding: ionic >1.7, polar covalent between, non polar <0.5

PV = nRT

METT TC mission enemy troops terrain time civilians

SALUTE size activity location unit time equipment

2s 6p 10d 14f

KE electron = E photon – Ionization Energy

Tissue: epithelial, connective, nervous, muscular

Epithelial: simple/stratified/pseudostratified cuboidal/columnar/squamous

  • single covalent bond – 1 shared pair
  • double covalent bond – 2 shared pairs
  • triple covalent bond – 3 shared pairs

Bond energy: single < double < triple

Bond length: single < double < triple

pKa’s:

Alkanes (50) CH4/CH3-

Alkene (44)

Alkyne (25

HF +3.2

HCl -7

HBr -9

HI -10

NH3 38 L

RCOOH (4-5)

HF (3.2)

NH4+ (9.26)

H2O (15.7)

ROH (17)

RSH (11)

H30+ (-1.7)

pKa = – log Ka

Spectroscopy: emission/absorption

A = e l c

IGL: point source, random motion, elastic collisions, high temp, low pressure

6 strong acids:

  • HCl
  • H2SO4
  • HNO3
  • HClO4
  • HBr
  • HI

The stronger the acid, the higher the Ka, the weaker the conjugate base.

hydrogen helium

lithium beryllium boron carbon nitrogen oxygen fluorine neon

sodium magnesium aluminum silicon phosphorus sulfur chlorine argon

potassium calcium scandium titanium vanadium chromium manganese iron cobalt nickel copper zinc gallium germanium arsenic selenium bromine krypton

rubidium strontium yttrium zirconium niobium molybdenum technicium ruthenium rhodium palladium silver cadmium indium antimony tin tellurium iodine xenon

cesium barium lutium hafnium tantalum tungsten rhenium osmium iridium platinum gold mercury thallium lead bismuth polonium astatine radon

SWAT – snipers, entry team, inner perimeter/gas people

AOR = area of responsibility

Catalysts: nickel, platinum, palladium

Markovnikov’s Rule: when an unsymmetrical alkene reacts with a hydrogen halide to give an alkyl halide, the hydrogen adds to the carbon of the alkene that has the greater number of hydrogen substituents, and the halogen to the carbon of the alkene with the fewer number of hydrogen substituents

Response to ambush: Lay down a base of fire, maneuver, indirect-fire support, and close-air support.

Plasma 4L

Interstitial Fluid 10L

Extracellular Volume 14L  Plasma + IF

Intracellular Volume 28L

Total Body Water 42L Plasma + IF + ICF

Vd = volume of distribution.  This is the hypothetical volume of fluid into which a drug is disseminated and prior to elimination.

Vd = Bioavailable Dose/Concentration in Plasma at T initial

rate of chemical reactions doubles for every 10 °C

HKBA

pH = pK + log base/acid

k = A e^{{-E_a}/{RT}}

Alkyl Halide     SN1      SN2

3′                       common     rare

2′                      sometimes   sometimes (less reactive, harsher reaction)

1′                        rare           common

Methyl Halides    never    common (good electrophiles, mild conditions)

“A steady hand, good muscle control, and calm actions may be difficult to achieve when the natural tendency is to panic”

Cheekbone to cheekbone, the widest spot on the head, on an average man was five and three-quarter inches.

Carbocation Stability

3′ > 2′ > 1′ > CH3+

MV x (12/twist rate in inches) x 60 = Bullet RPM

Lubricant: Graphite /Molybdenum disulfide MoS2

diameter in mm X length in mm

caliber = diameter in mm/25.4

supine situps, prone pushups

Silence is golden

One time constant=the time it takes for a charged capacitor in an RC circuit to discharge to 36.8% of its initial voltage

How can the true power= Apparent power x power factor
Modulation index  = Frequency Deviation Carrier/Modulating Freqnecy

gauge – how many lead spheres the diameter of the bore would equal a pound

Density H2O(g) = 0.8 g/L

Density Dry Air = 1.225 g/L

Wind, vertical angles, air density, gyroscopic spin, mangus effect

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  1. December 14, 2012 at 4:08 pm

    The link seems to be broken. This one should work

  2. Ryu
    December 15, 2012 at 6:10 pm

    Sorry about that Lar.

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