Search found 21 matches

by rosebud
Thu Apr 13, 2006 9:15 am
Forum: Human Biology
Topic: Muscles
Replies: 4
Views: 4531

: Muscle spindles are specialised fibres and they act as receptors to the amount of stretch in a muscle. : As they become stretched , spindles send impulses via sensory neurones to the spinal cord. : These synapse with motor neurones that lead back to the muscles (effectors) : At the muscles these i...
by rosebud
Wed Apr 12, 2006 6:12 pm
Forum: Human Biology
Topic: Muscles
Replies: 4
Views: 4531

I'm not asking for an answer. I just want some ideas that I could include. I already have a rough idea of what to put.
by rosebud
Wed Apr 12, 2006 9:17 am
Forum: Human Biology
Topic: Muscles
Replies: 4
Views: 4531

Muscles

Q. Outline the sequence of events that occurs between the stretching of muscle spindles and the increased contraction of the brachialis muscle.

(8 marks)

:D
by rosebud
Tue Apr 04, 2006 5:31 pm
Forum: General Discussion
Topic: aspirin coursework
Replies: 8
Views: 5680

Thankyou very much
:P
by rosebud
Tue Apr 04, 2006 7:35 am
Forum: General Discussion
Topic: aspirin coursework
Replies: 8
Views: 5680

I have worked out that a 1.5% solution of aspirin is equivalent to one tablet in 20cm3 of water.

I now need to dilute this solution to get different concentrations of this solution. Can anyone tell me how I would go about doing this.

Thanks
:)
by rosebud
Tue Mar 28, 2006 7:35 am
Forum: General Discussion
Topic: aspirin coursework
Replies: 8
Views: 5680

thankyou mithrilhack
:)
by rosebud
Mon Mar 27, 2006 8:59 am
Forum: General Discussion
Topic: aspirin coursework
Replies: 8
Views: 5680

aspirin coursework

I have to plan an experiment to determine the amount of aspirin left in the body after excretion by measuring the amount in urine.

I have been given a 1.5% solution of aspirin.

Can anyone tell me how you find out how many aspirin tablets this is equivalent to.

Thanks
:)
by rosebud
Tue Dec 20, 2005 10:14 am
Forum: Physiology
Topic: nervous system crossover (hard question!)
Replies: 13
Views: 26695

Re nervous system crossover (hard question!)

I think that it may have something to do with the different sections of the brain. Certain things like logic and taste are arranged in different areas. Information is crossed other as things that are on different sides interlink and work together. Also it means that if individuals become paralysed i...
by rosebud
Tue Dec 20, 2005 10:08 am
Forum: Cell Biology
Topic: Why did I have to be Biology retarded.
Replies: 2
Views: 2196

Re. Why did I have to be Biology retarded

melatonin is made in the brain

it controls how sleepy people are by either producing more or less

some people have disorders which means they produce melatonin late and in these people it remains in excess and so they always feel sleepy
by rosebud
Tue Dec 06, 2005 6:32 pm
Forum: Human Biology
Topic: Kidney
Replies: 3
Views: 2397

Thanks all

:D
by rosebud
Mon Dec 05, 2005 2:32 pm
Forum: Human Biology
Topic: Kidney
Replies: 3
Views: 2397

Kidney

Explain why eating extra protein may have a greater effect on the urea content of the urine of an adult than a child.

(3 marks)


Thanks
:)
by rosebud
Wed Nov 09, 2005 9:22 am
Forum: Cell Biology
Topic: Help me!! environmental factors for photosynthesis
Replies: 6
Views: 16020

light intensity

temp

suitable pigments (chlorophyll/carotenoids)

amount of water

carbon dioxide concentration

:D :wink: