Cellular

Communication

Keeping your body running

Cellu

lar

Com

munic

ati

on

• Your cells must be able

to “talk” to one another.• Nerve cells must send

signals• Specific signals have to

be sent throughout your

entire body• As simple as telling a

muscle to move, or as

complex as preparing

the entire body for a

split-second reaction.

Cell

Str

uct

ure

• The key players• Nucleus and DNA• Ribosome• Endoplasmic Reticulum• Mitochondria• Cell Membrane• Protein receptor

molecules

Rece

ivin

g t

he

Mess

age

• All about shape and size • The signal sent to a cell

fits into a protein receptor that is the

matching shape of the

message

• The receptor then sends

a message to the inside

of the cell telling it how

to react based on the

signal

Cell

Str

uct

ure

Proce

ssin

g t

he

Mess

age • Based on what signal

has attached to the outside of a cell, the

nucleus then sends out signals telling the

cell to do something or

react a certain way

Types

of

Mess

ages • Two main categories of

signals the body sends

out• Nerves send out

neurotransmitters• Glands send out

hormones

Neuro

transm

itte

r s

• Nerves send signals from

one nerve to the next by

releasing signals that only

occupy the small space

between the nerves• Signals sent out as result

of a nerve impulse that

travels the length of the

nerve• Impulse is an electrical

signal that travels the

length of the nerve.

Nerv

e S

truct

ure

Nerv

ous

Sys

tem

• Includes brain and all

nerves• Brain• Central nervous system• Brain, spinal cord

• Peripheral nervous system• All branches of nervous

system

Div

isio

ns

of

the

Nerv

ous

Sys

tem

• Somatic vs. Autonomic• Autonomic =

involuntary• Somatic = everything

you control

Wit

hin

the

auto

nom

ic-

• Sympathetic nerves- • Prepare you for

emergency, bring organs “up”• Parasympathetic

nerves-• Calm body down after

event

Dir

ect

ions

You will be assigned a

topic- either an organ or

set of terms. You will

have to:Explain it (5)Produce a diagram/worksheet for

the class to label (5) Have at least 2 real life

applications or examples

to help people remember

your information (5)Present to the class using

some sort of technology

(5)