Biology 1A
- Created by: Shine.7
- Created on: 16-04-14 20:53
View mindmap
- Biology 1A
- Fighting Diseases
- BACTERIA: living cell/damages cells/produce Toxins
- VIRUS: invades a cell/replicates/burst cell= damaged cells
- DEFENCE SYSTEM/ IMMUNE SYSTEM:
- White Blood Cells will attack pathogen
- 1) Engulf and Digest
- 2)Produce Antibodies (wbc produces a protein to LOCK+KILL specific invading cell.
- 3) Produce Antitoxins
- 2)Produce Antibodies (wbc produces a protein to LOCK+KILL specific invading cell.
- 1) Engulf and Digest
- White Blood Cells will attack pathogen
- Prevent entering body: hair/mucus
- VACCINATION
- Injection w/ INACTIVE microorganism
- trigger immune system/WBC produces antibodies as the microO carries antigens
- Memory cells
- If microbe attacks again(alive) antibody produced quickly to destroy.
- BODY= has defences.
- If microbe attacks again(alive) antibody produced quickly to destroy.
- Memory cells
- trigger immune system/WBC produces antibodies as the microO carries antigens
- Injection w/ INACTIVE microorganism
- Drugs for diseases&Fighting
- Antibiotics ONLY- Bacteria. Doesn't destroy viruses(flu) as it is inside the cell, HARD to make a drug BC it will kill the body cell
- Too many take: Bacteria= resistant/ immune
- Viruses tend to mutate:hard to develop vaccines
- Too many take: Bacteria= resistant/ immune
- Semmeilweis: doctors to clean hands before delivery- reduced death rate
- Antibiotics ONLY- Bacteria. Doesn't destroy viruses(flu) as it is inside the cell, HARD to make a drug BC it will kill the body cell
- Nervous System
- Reflexes: automatic/prevents injury
- CNS (Brain+Spinal C) =info sent and action coordinated
- Sensory/Relay/Motor/Effector
- Neurones transmit info as electrical impulses.
- Sense organs/receptors/stimuli
- Hormones and Menstrual Cycle
- 4 stages: bleeding+break down of uterus lining/ 2) lining builds up 3)egg realeased 4)waits to be fertilised or maintaned and then process starts again
- FSH: PGland=egg to mature and stimulate production of OE
- Oestrogen-Ovaries=produce LH and inhibit FSH
- LH-PGland=release egg
- CONTRACEPTIVE: oestrogen(inhibits FSH produced)+progesterone(makes mucus to stop sperm)
- v. effective/reduces risk of cancer.
- many side-effects/blocks vital arteries
- FERTILITY
- Help get pregant
- multiple pregancies/chance of abnormatility/might not work
- Oestrogen-Ovaries=produce LH and inhibit FSH
- Chemical Messangers/travel in blood/affect target cells/secreted-glands
- pass through SNYAPSE ( Connection btw 2 neurones)-diffuse across gap.
- Fighting Diseases
- IVF: RIIE (removal/insemination/incubation/embryo transfer)
- Baby
- multiple births/ High R. miscarrage/strong reactions pain ect
- Baby
Comments
No comments have yet been made