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Midsagittal Plane
a sagittal plane that divides the body,top and bottom,into equal left and right halves.
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Anatomical Position
Standing up erect, facing forward, arms to side, palms toward front.
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Transverse Plane
divides the body into superior and inferior portions.
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Superior
upper, above,toward the head.
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Inferior
Lower, below, toward the feet.
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Proximal
situated nearest the midline or the beginning of the body structure.
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Distal
farthest away the midline.
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Lateral
toward or nearer the side and away from the midline.
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Medial
direction toward or nearest the midline, middle.
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LUQ
- Left Upper Quadrants
- (Pancrease stomach, spleen.)
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Ventral Cavity
located along the front of the body, contains the body organs that maintain homeostasis.
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Thoracic Cavity
Aka chest cavity or thorax, surrounds and protects the heart and lungs.
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Diaphragm
is a muscle that separates (divides) the thoracic and abdominal cavities.
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Pathology
the study of the nature and cause of disease that involves changes in structure and function.
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Physiology
study of the function of the structures of the body.
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path/o, ~ pathy
disease, suffering,feeling, emotion.
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physi
nature or physical.
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Pelvic Cavity
is the space formed by the hip bones and it contains primarly the organs of the reproductive and excretory system.
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Chromosomes (Term)
- -The genetic structures located with in the nucleus of each cell.
- -Made up of the DNA molecules containg the body's genes (1000,000).
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Dominant Gene
is inherited from either parent, the offspring will have that characteristic. (sickle cell anemia)
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Recessive Gene
- -Is inheritied from only ONE parent, and a normal gene is inherited from the other parent, the offspring will not have the characteristic. ( doesnt have sickle cell anemia, but does have traits. transmit trait to their offsping)
- -The same recessive gene is inherited from BOTH parents the offspring will have that characteristic.
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Dominant Trait
- -eye color:brown
- -vision: normal, color vision, Hyperopia (farsided)
- -hair: dark, curly, full head of hair
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Recessive Traits
- - eye color: blue
- -vision: Myopia (nearsided), Monochromatism (one color), Nyctalopia ( blind at night).
- - hair: light, straight, baldness.
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Centromeres (Term)
- (Arms) help keep chromosomes properly aligned during mitosis.
- -genetic material
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Telomeres
- (Linear) they protect the ends of chromosomes similar to the way a tip of a shoelace keeps it from unraveling.
- -protects midbrain
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Exocrine Glands
- -secrete chemical substances into ducts that lead to other organs or exit the body. (sweat & salivary glands)
- -humans 99% H2O
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Endocrine Glands (Term)
- -secrete hormones
- -ductless
- -flow directly in the blood stream.
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Deoxyribonucleic Acid (Term)
aka DNA.
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Embryonic Stem Cells (Term)
- -are undifferentiated cells that are unlike any specific adult cell, however they have the ability to form any adulit cell.
- -they can proliferate (grow rapidly) in a lab.
- - more primative then adult stem cells.
- -comes from the cord blood found in the umbilical cord and placenta of a new born infant.
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Hemopoetic Stem Cells
- divide to form more blood-forming stem cells.
- -RBC- transport oxygen, oxygenerator.
- -WBC-infection.
- -platelets-clotting
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Embryonic Sources (Term)
- -newly formed embryo's
- -umbilical cord
- -placenta of a newborn.
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Hematopoietic Source
- -long and flat bones
- -hip and femur
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DNA
- dna is found in the nucleus of all types of cells except erythrocytes (RBC).
- - difference erythrocyte has no nucleus.
- - helix-shape of a spiral staircase. (twisted chromosomes)
- - double helix- is double strands of helix twisted together
- -nuclear dna found in nucleus of a cell
- - dna teams A/T&G/C (base pair)
- - replication, copy.
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RNA
- ribonucleic acid is a chemical similar to dna
- -transmites genetic info from dna to proteins produced by the cell.
- -messenger for the replication process.
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Connective Tissue
- - supports and connects organs and other body tissues. (bone/adipose)
- -types of connective tissues: dense, adipose, loose, and liquid.
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Adipose Tissue
- adip-fat
- -ose-pertaining to.
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Nerve Tissue
- contains cells with specialized ability to react to stuimuli and to conduct electrical impulses.
- - most abundant
- -axon-sends info away
- -dendrite- recieves info
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Chromosomes
keep dna tightly wrapped around proteins (histones)
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what are genetic disorders?
a disease caused by a "variation" (different form) or "mutation" (alteration) of a gene.
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Genetic Disorder
- -simple gene disorder-simple gene mutation. mutaion on one or both chromosomes.
- -chromosomal disorder- excess of deficiency of the genes that are located on the chromosomes, or structural changes....down syndrome.
- -multifactoral inheritance disorder-(enviroment) heart diseases and cancer.
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CF
- cystic fibrosis is a genetic disorder that is present at birth and affects both the respiratory and digestive system.
- - thick sticky mucus that clogs the lungs, leads to infection.
- Cystic Fibrosis Transmembrane Regulator(CFTR) gene causes CF.
- -no symptoms
- -cant treat when pregnant
- -deadliest gene disorder
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Why are RBC Abnormal?
hemoglobin s molecules stick to one another and form log, rod like structures.
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Sickle Cell Anemia
- -abnormal Hgb (Hgbs)
- -rbc's essume an abnormal sickle shape
- -interferes with normal blood flow
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