Levels Of Organisation Flashcards
Describe the chemical/molecular level of organisation
Atoms: nitrogen, carbon, oxygen, hydrogen
Molecules, water, sugar, carbs, nucleaic acids, amino acids ext
Chemical level is larger molecules
What are the chemical level organs compounds
Macronutrients, nucleic acids (nucleotides to rna/dna)
High energy compounds (phosphate groups + nucleotides =atp)
Explain the 4 types of tissues
Epithelial - cover exposed surfaces, line internal passages, produce glandular secretions
Connective - fill internal passageways
Muscle - contract for movements
Neural - conduct electric, carry impulse
Name the organ systems
Discrete collection of 2 or more organs cooperatively performing a function
- integumentary
- skeletal
- muscular
- nervous
- endocrine
- cv
- lymphatic
- respiratory
- digestive
- urinary
- reproductive
Explain the endocrine system and list the glands
- pineal
- pituitary
- thyroid
- parathyroid
- thymus
- Pancreas
- adrenal
- kidneys
- ovaries and tested
Explain the lymphatic system
Lymph nodes, thymus gland, spleen, lymphatic vessel in the leg = immune function
Components of the respiratory system
Nasal cavity, sinuses, pharynx, larynx, trachea, bronchitis, longs, diaphragm
Components of the digestive system
- salivary gland
- pharynx
- oesophagus
- liver
- stomach
- gall bladder
- intestines
- anus
Explain the urinary system
Kidney, ureter, urinary bladder, urethra
What are the two body carbides
Dorsal - brain and spinal chord
Ventral - thoracic, abdominal and pelvic organs
What are the contents of the thoratic/abdominopelvic cavities
- liver, stomach, gallbladder, large and small intestine, appendix, spleen, urinary bladder
Positive and negative feedback
Negative - oppose variations from normal eg thermoregulation
Positive - exaggerates variations eg blood clotting
