cell growth in animals Flashcards
how does growth occur
via cell division and differentiation
how does cell division occur
mitosis
what happens after mitosis
cells differentiate into specialised forms
how are red blood cells specialised for their function
no nucleus for space for haemoglobin and large surface to allow quick diffusion of oxygen
how are nerve cells specialised for their function
long to carry messages around body efficiently
how are muscle cells specialised for their function
change length to help us move, lots of mitochondria
what to percentile charts do
tell us the rate at which an organism is growing
how do you know if growth is normal
if growth spreads over no more than two curves
what does a baby born on the 75th percentile for mass mean?
the baby is heavier than 25% of babies
why is it important to take several measures of growth
in case there are anomalies and one grows faster than the other, comparison of two measurements can identify problems
growth of young babies can be measure by :
length, mass, head circumference
