Week 13 Flashcards
Lividity or livor mortis
-Pattern of blood settling after death, with blue to purple color
-blood continues to speak after life ends
-gives scientists clues about manner or sequence of death
-lividity or livor mortis: after heart stops pumping blood settles in lowest part of body under force of gravity, skin turns blue in these areas because of lack of o2, helps estimate time of death, shows if body has moved after death, pressure points, silent witness of positioning
Blood Stains and Spatter:
-Pattern of blood lost or generated from an impact on a source of blood
-blood staining = direction of force, weapon type, number of blows, position of victim and assaliant
How many things are in blood?
Gases
Ions
Nutrients
Wastes
Clotting factors
Enzymes
Antibodies
Carriers
Hormones
Infections
Cells
Cancer
DNA
Pollutants
Poisons
A single drop of blood
-a single drop of blood molecule rich, biologically dynamic, e.g. cancer in blood helps a lot in disease monitoring, liquid biopsy full of genetic material, biological debris
-overview: tumour gives signal and releases factor in blood
-cancer spreads to surrounding tissue through blood vessels
-future might not need biopsy, just blood
Bloodlines and Blood Quantum
-Quantifying blood purity and cleanliness
-Labeling, othering, exoticizing, racializing
-measures heritage by fractions of ancestry
-used to control or exclude people, ignore cultural experiences, lived experience
-rooted in colonialism, eugenics, not science
-Nuremberg laws Nazi Germany who was full German, mixed, Jewish by blood
-rights, marriage, citizenship determined by blood quantum
-Indian act gave gov authority to determine who was status Indian before 1985, discrimination against Indigenous women who married non-Indigenous men
Mother-Child Connection
-Many things transfer between mother and fetus at the placenta
-Most ions, nutrients, wastes, hormones, some antibodies (IgG) and other proteins
-placenta, exchange of oxygen and nutrients, waste products bw 2 circulatory systems without blood mixing, placenta is lifeline, even before birth human life shaped by relationships, shared biology
Identity & Blood
I am my molecules = red blooded, bad blood
I am my genes = pure blood, mixed blood
I am my cells = flesh and blood, blood and guts
I am what I eat =, bloodthirsty, taste for blood
I am my family = blue blood, blood relatives, blood will tell
I am my actions = hot blooded, blood sport, bloodlust
I am my experiences = true blood, blood on my hands
I am my history = blood memory, bloodline
I am my personality = sanguine, cold blooded, wise blood
I am my feelings = bleeding heart, out for blood
I am my social bonds = blood brothers, blood oath
I am my ideas = “the ink of the scholar outweighs the blood of the martyr”
-language, blood, self-understanding
-red blooded = passionate, healthy. Bad blood = conflict
-I am my family = blue blood, aristrocrastcy
Specialized epithelial tissues for exchange with blood in organs: maximizing surface area
Human kidney (nephrons)
SA ≈ 18 m2 ~size of a bowling alley!
Human small intestine (villi & microvilli)
SA ≈ 300 m2 ~size of a tennis court!
Human lung (alveoli)
SA ≈ 75 m2 ~size of a badminton court!
-SA important for exchange bw tissues and blood
-e.g. lungs give SA with branches
-form meets function
-total human capillary system at bottom = 1000 square m larger than basketball court
how has the meaning of blood has shifted
-from ancient violence to social activism, data surveillance
The sacrifice of humans was to honor the gods who had sacrificed themselves to create the universe and the world. It was an unselfish act of creation and continuation.
-ritual on top temple. Priest extract beating heart as offering
-similar sacrifice, blood, divine presence, cosmic balance
-cosmology: blood not just shed, shared with God as gesture of love, honour, balance. Reciprocy and reverance
severed head of medusa
-blood is never neutral
-carries memory, magic, meaning
liquified blood of san gennaro patron saint of Naples
Vile of coagulated blood = liquefaction miracle keeps blood liquified few times a year
Cell to society
-basic level: blood maid of cells, nutrients, oxygen. Zooming out plays role in identity, social structures, politics, symbolism
