Body Plan Lecture Notes
Essay by jmv5 • September 18, 2016 • Course Note • 524 Words (3 Pages) • 1,547 Views
- How our evolutionary past has determined our form
Kingdom: Animal → A living organism capable of independent movement Cell membrane, organelles, energy from organic/O2 | |
Subphylum: Vertebrate → Four limbs with five digits for terrestrial transition (Pentadactyl limbs) → Protection, support, locomotion | |
Warm Blooded: Due to presence of metabolic rate | |
Four Chambered Heart: Allows pulmonary and systemic vascular systems to be arranged in parallel. | |
Binocular Vision: Determine distance (jumping), predators → Stereoscopic
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ORGAN SYSTEMS
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Reproductive Success & Skin: Highly melanised skin protected against UV-induced photolysis of FOLATE which is essential for normal development of the embryonic neural tube. | |
Speech: Lengthened Pharynx
| [pic 1] |
- Segmentation and its significance
[pic 2] |
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- Polarity and its significance
“Head & Tail” → Gill Slits are transient at the Head. | [pic 3] |
Cranial: HEAD, Caudal: TAIL | |
Head end = buccopharyngeal membrane (Endoderm) Tail =Cloacal membrane (Ectoderm) | |
Dermatome & Myotome arrangement | |
- Unique features of the human body
Basic Tissues: Epithelia, Connective, Muscle, Nervous | [pic 4] |
Notochord = flexible rod of support (Phylum: Chordate) | |
Neural tube = dorsal hollow nerve cord | |
Skin appendages: hair, sweat glands | |
Mammary Glands: Breast Feeding | |
Opposable Thumbs, Binocular Vision, Large Brain, Hand/eye coordination. | |
Upright Stance, Skull, S-shaped spine, Arched foot | |
Body Cavities:
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Bilateral symmetry: facilitates movement via skeleton and associated muscles | |
Asymmetrical regions & structures
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Flexor/Extensor Regions
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MESODERM: connective tissues & vessels. |
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