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what is anatmy
Tissues
Cell division
embryology
embryology
100
Greek for "to cut up" or "cut open"
What is Anatomy
100
1. Nervous 2. epithelial 3. muscle 4.
What are the four connective tissue types?
100
haploid, only contain 23 chromosomes diploid(23 pairs) all other body cells in mitosis a diploid cell produces 2 genetically identical diploid "daughter cells" reproductive organs pproduce haploid cells
What is Gametogenesis
100
Meso derm- forms between epiblsdt and hypo blast layers by the migratory epiblast cells Endoderm- formed by migrating epiblast cells displacing hypoblast cells 3. ectoderm- formed by remaining epiblast cells
What are the primary germ layers
100
formation of this begins with appearance pf the notochord which is derived from mesoderm -the notochord is a rodshaped structure internal and parallel to the primitive streak -will eventually develop into the nervous system
What is neurulation?
200
Organization, metabolism, growth and development, responsiveness, adaptation, regulation, reproduction
What is charecteristics of a "living" organism
200
Stratum basale stratum spinosum stratum granulosum stratum lucidum stratum corneum
What is layes of skin from deepest to top
200
division of a diploid cell producing two haploud "daughter" cells occures in diploid cells testes or ovaries involveds 2 division cycles resulting cells are not identical exchange of genetic material between paired homologous chromosomes may occur gametes contain a combination of genes from both parents=genetic diversity
What is Meiosis
200
ectoderm is located on the external surface of the embryo *ectoderm cells will eventually develop into the following structures epidermis of skin -derivatives of epidermic, including hair and nails -nervous system
What is ectoderm diffrentiation
200
a highly vascularized organ that serves as a physical and biochemical interface between mother and embryo comprised of tissues from both mother (endometrium) and embryo (chorion)
What is the placenta
300
capable of producing the brown pigment melanin. Melanin can absorb energy from uv light UV light contains high energy protons that can damage DNA (mutations) Melanin helps produce skin cancer
What is Melanocytes
300
spindle fibers pull sister chromatids apart to opposite ends of the dividing cell
What is Anaphase
300
cells from the epiblast layer move through the primitive streak to locate themselves between the epiblast and hypoblast layers
What is Gastrulation (primitive streak)
300
embryonic disk and amnion grow rapidly *yolk sac does not *differential growth causes head and tail regions to fold on themselves
What is cephalocaudal folding?
400
Atoms, molecules, cells (smallest unit of life), tissue , organ, systems, organism
What is What is Structural organization of human body
400
1. Specialized Cells 2. Ground substance- produced by the CT cells and comprised of proteins and carbohydrats w/ variable amounts of salts and h2o. Can be either viscous (as in blood) semisolid(cartilage) or solid (bone). 3. Extracellular protein ffibers --collegen, elastin
What is the composition of connective tissue
400
bean shaped organelles with double membrane inner membrane fluid :matrix *function to produce high energy containing molecule called APT on the cristae *cells that require more energy have more of this that cells requiring less energy
What is Mitochondria
400
Meso derm- forms between epiblsdt and hypo blast layers by the migratory epiblast cells Endoderm- formed by migrating epiblast cells displacing hypoblast cells 3. ectoderm- formed by remaining epiblast cells
What are the primary germ layers
400
1. exchanges of nurtients, wastes and blood gases between embryo and mother 2. transmission of materials antibodies to the embryo 3. production of many hormones predominantly estrogen and progesteron
What is the funcitons of the placenta
500
Serous membrane=peritoneum 2 continous layers 1. Viseral peritoneum 2. parietal peritoneum: lining the internal walls and not directly in contact w/ the organs the space in between is the peritoneal cavity
What are membranse of the abdominopelvic cavities
500
high capacity to reginerate, avascular functions include- protection 2. secretion, sweat and oil glands, mammary glands, enzyme secretion 3. sensory detection contain nerver ending that can detect many sensations such as touch, pressure, temperature, light, taste, smell
What is the epithelium and its functions?
500
nuclear envelop breaks down 2. homogous double stranded chromosomes pair up in a process called mitosis to form a synapsis; tetrad 3.crossing over ensures genetic diversity in future generations
What is Meiosis Prophase 1
500
left and right sides curve and migrate toward midline restricks yolk sac and cause it to pinch off embryo sides fuse, creating cylindrical embryo *ectoderm now cover embryo *endoderm confined inside
What is transverse folding
500
notochord-tightly packed midline cells *paraxial- beside notochord, develops into units called somites that form axial skeleton, muscle, dermis of the skin, most connective tissue 3.intermidiate- lateral to paraxial, develops into most of the urinary and reproductive systems 4. lateral plate- lateral to intermediat, forms most components of cardiovascular system, lining body cavities, and connectice tissue of the limbs 5.hed mesenchyme- forms the connective tissue and musculature of the face
What is mesoderm differentiation?