Zusammenfassung der Ressource
Human Biology revision
- 5 female
hormones
during
reproduction
- Progesterone
- thickens nutrient
based endometrium
in preparation to
receive a fertilised
ocyte
- Gonadotrophin releasing
hormone(GnRH)
- neccesary for correct reproductive
functions, controls follicular growth,
ovulation and corpus luteum
- Oestrogen
- starts off
ovulation, rebuilds
lining after
menstruation
- Follicle stimulating hormone (FSH)
- Controls menstrual
cycle and the production
of ocytes by the ovaries
- Luteinizing hormone (LH)
- development and
function of the
corpea luteum
(yellow body)
- Functions of the skelton
- Support
- Movement
- Protection
- Storage of
calcium
- Production of
WBC and RBC
- Attachment
- Shape
- Polysynaptic Arc
- How many neurones
are found in a reflex
arc?
- 3: Sensory,
Interneurone
(Relay) and Motor
- Reflex arc
- involuntary
response to
danger, not learnt,
the spinal cord
makes the decision
- non dangerous
reponse,
volunatry, brain
makes the decision
- Importance of enzymes
- Key for the bodies
metabolism/facilitates
chemical recations such as
respiration, digestion and
other important processes.
when enzymes function
properly homeostasis is
maintain
- The specific action of an enzyme with a
single substrate can be explain by the Lock
and Key theory 1894 by Emil Fischer. The
lock is the enzyme and the substrate is the
key. Only the correct key (substrate) fits the
correct key hole (active site) of the correct
lock (enzyme).
- Diet
- What is Malnutrition?
- excess or
lack of
nutrition
- What is a
balanced diet?
- Correct proportions of food -
nutrients, minerals and energy
- What is the importance
of protein in the body?
- building blocks of
all cells, enzymes,
muscle repair,
channel proteins,
hormones-insulin,
antibodies,
hymoglobin
- Respiration is a chemical
reaction that happens in all
living cells, it is the way in that
energy (ATP) is released from
glucose in order for other
chemical reactions to happen.
- What is Aerobic
and Anaerobic
respiration?
- Aerobic: uses oxygen,
produces 38ATP
- Glucose and oxygen react
together to produce carbon
dioxide and water and releases
energy.
- Anaerobic
respiration, doesn't
use oxygen,
produces 4 ATP
- During stenuous exercise , not enough
oxygen can reach your muscles, the
waste product of this - Lactic acid builds
up in the muscles causing tiredness and
pain and eventually cramp. The lactic
acid can be broken down again when
you start aerobic respiration again.
- ATP
- many chemical
reactions including:
active transport,
muscle contarction,
respiration, RER,
manufacture proteins,
sperm
- moving molecules
- Osmosid
- Simple diffusion
- facilitated diffusion
- Active transport
- 3 examples: Gas exhange in the alveoli.
Glucose and disolved food nutrients in the villi.
Food nutririents in the gastric pit.
- Large surface area
- Short diffusion pathway
- concentration gradient
- veins
- Arteries
- thick elastic muscle layer, high
pressure, carries oxygenared blood
from the heart with the exception of
the pulmonary artery and umbilcal
cords which do not.
- thin, elastic muscle layer,
smilunar valves to stop
back flow, low pressure,
carrying deoxygenated
blood to the heart with the
exception of the pulmonary
veins and umbilical cord
- The
human
heart
- cell organelles
- Mitochondria - converts
glucose into ATP in the
cell
- Smooth ER - produces
lipids and membrane
proteins.transports
materials through the
cell
- Rough ER - produces proteins in sacks called
cristae, transports materials through the cell.
- Nucleus - controls many
functions of the cell and
contains DNA
- Golgi body - packages proteins
and carbohydrates into
membrane bound vesicles for
export
- Ribosomes - composed of RNA rich cytoplasmic granules
that are sites of protein synthesis