I. Answer these questions
1. What is the definition of the Nervous System?
2. What is the definition of the Central nervous system?
3. What is the definition of the Peripheral nervous
system?
4. What is the definition of the Endocrine system?
II. Answer to this questions
III. Read carefully and say if the sentences are True (T) or False (F)
1. Analyze. What stimuli cause you to sweat and cause
your pupils to shrink (become smaller?
2. How can messages from the endocrine system reach cells
throughout the body?
3. Your hand jerks (move suddenly) away from a hot
surface. Do you think the message was sent by the nervous or endocrine system?
Explain.
To answer these questions, read your books on pages 817-819.III. Read carefully and say if the sentences are True (T) or False (F)
1. Most neurons have three main parts: cell body,
dendrites and the axon. ________
2. Neurons can have more than one dendrite. ________
3. Sensory neurons pass messages from the nervous system
to other tissues in the body, such as muscles. ________
4. Schwann cells are kind of specialized cells. ________
5. The collection of Schwann cells is called myelin
sheath. ________
6. The axon terminal contains chemical-filled vesicles.
_________
7. Neurotransmitters are the chemical signals of the
nervous system.________
8. A threshold ensures that action potentials are not
produced unless the neuron has received enough stimulation. _________
II. Answer the following question about “Neuron”.
1. What is a neuron?
2. What are dendrites?
3. What is the function of the axon
4. How many types of neurons are there? Write them and
explain each of them.
5. How does a neuron’s shape allow it to send signals
across long distances?
6. How many types of neurons are there? Write them and explain each of them. (3 points)
6. How many types of neurons are there? Write them and explain each of them. (3 points)
7.
How do the
neurotransmitters generate an impulse in an adjacent neuron?
Endocrine glands secrete hormones that act throughout the body.
Endocrine Gland
|
Location
|
Main Function
|
1. hypothalamus
|
brain
|
growth, reproduction
|
2. pituitary
|
brain
|
cell division, protein synthesis, bone
growth
absorption of water from kidneys
|
3. thyroid
|
neck
|
metabolism, digestion, bone formation
|
4. thymus
|
chest
|
white blood cells
|
5. adrenals
|
above kidneys
|
blood pressure, breathing rate,
fight-or-flight response
|
6. pancreas
|
between stomach and intestines
|
digestion and glucose metabolism
|
7. gonads
|
pelvis
|
sexual development and functions
|
