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BIOLOGY NOTES
CELLS PART 3
PAGES 84, 722-728
NAME:
DAY / MOD:
DATE:
Standards:
____ Explain the role of cell membranes as highly selective barriers
____ Identify the major parts of the brain on diagrams or models
Essential Question:
1.
I. Cell Receptors = a _____________ that detects a signal molecule and performs a ___________ in response
 cell receptors only bind to specific shaped molecules called ________________
 this ensures that only the right cell receives the right _________________
TYPES OF RECEPTORS:
1. intracellular = receptors ___________ the cell which means the message or ______________ must
cross the cell membrane
 common form of how __________________ work
2. membrane receptors = receptors located on the _____________ of the cell membrane which
change shapes in response to a bound ______________ in order to communicate the message inside
the cell
 used when the ligand is usually too _____________ to cross cell membrane
II. Nervous System - The Body’s Electro-Chemical Communication System
A. Functions
1. Gather information from _______________ and ______________ the organism
2. Transmit this information in the form of _________________ and _______________ messages to
the brain
3. Process the information and choose the best ______________ that will keep the organism in
homeostasis
4. Send the decision to _____________, glands, and/or _________ through _____________ or
_________________ messages so they can perform appropriate actions
B. Neurons = the basic nerve cell which functions to carry ________________ through the nervous system
in the forms of nerve _________________ and neurotransmitters
 neurotransmitter = the chemical form of ____________ that travels within the ____________
system and allow neurons to communicate with other ________
 in order for 2 neurons to communicate, the ____________________ must be allowed into the
cell which means it must be recognized by cell membrane _____________ and possibly
______________ or be actively transported across the cell ____________________
DIAGRAM OF NEURON COMMUNICATION:
C. The Brain = The major_____________ unit of the body made of many _______________ which
receives messages about the environment and decides which _______________ to take in order to keep
an organism alive
 can be divided into different __________ each having specific controls
Sections of the Brain:
1. Cerebrum = area of the brain responsible for all _____________ activities of the body as
well as personality and ________________
Page, A.
Unit 3 Page 2C
2.
3.
4.
5.
 consists of the __________ and __________ hemispheres which can communicate with
each other using the ____________ callosum
 the left hemisphere controls muscles and senses located on the _________ side of
the body as well as ____________, logic, and __________
 the right hemisphere controls muscles and senses located on the _________ side of
the body as well as spatial abilities, facial recognition, visual imagery, and
___________
 as a whole, the cerebrum can be divided into different _____________, each responsible
for specific controls
a. frontal lobe = part of the cerebrum in charge of planning, _______________,
problem-solving, movement (___________ cortex), and some aspects of speech
(____________ area); also considered the area where the seat of ______________ lies
b. temporal lobe = part of the cerebrum in charge of _____________, speech reception,
and some parts of the ________________ (hippocampus)
c. parietal lobe = part of the cerebrum that detects changes in the skin including
___________, heat, __________, pain, and the position of the body in space
d. occipital lobe = part of the cerebrum that is in charge of _____________
Cerebellum = area of the brain responsible for coordinating body __________________
 Puts commands for movement received from the ________________ into action with
_______________
Brain Stem = area of the brain that connects the brain to the ____________ cord and
regulates ___________________ action
e.g.
a. medulla oblongata
b. pons
Thalamus = receives messages from the ____________ and relays to the correct part of the
__________________ for further processing
Hypothalamus = part of the brain which controls ____________, thirst, anger, fatigue,
____________ temperature and coordinates responses with the _________________ system
STUDENT SYNTHESIS
To demonstrate knowledge of the information contained within these notes, within the space below EITHER 1. Create two higher level
test questions and answers based on the information OR 2. Write a comprehensive one-sentence summary of the information
Page, A.
Unit 3 Page 2C