Cb2 Cells And Control Flashcards
How many chromosomes does a diploid cell have
They containe one copy of each cell and are haploid
What is mitosis
The cell splits to form two daughter cells which are both identical to the parent cell
How do cancer cells form
When cells divide uncontrollably very quickly
What are some types of specilised plant cells
Root hair cells xylem cells
What are stem cells
They are cells that can divide repeatedly over a long period of time
What is neurotransmition
It is the travailing or transmission of impulses and it happens in the neurones
What is the function of a sensory neurone
It carry’s impulse from receptor cells towards the CNS (central nervous system)
What is a dendrite
It is a tiny branch that receptor cell impulses pass through
What do dendrons and axons allow
That allow fast neurotransmissions over long distances
What is myelin sheath
It is a fatty layer
What does myelin sheath do
It electrify insulates an neurone from neighbouring neurone
What do effectors receive
A stimulus response from the brain called impulses
What do effectors include
Muscles and glands (sweat glands)
What do motor neurones do
They carry impulses to effectors
What are relay neurones
They are short neurones that are found in the spinal cord
