All vertebrates have what type of circulatory system?
Answer: closed circulatory system
How does the circulatory system maintain homeostasis?
Answer: through water and electrolyte transport, fluid volume control and regulation of pH and of body temperature.
Name 4 functions of the circulatory system.
Answer: heart, arteries, veins, capillaries
What are blood vessels that carry blood away from the heart called?
Answer: arteries
What are blood vessels that carry blood to the heart called?
Answer: veins
What is the sac that surrounds the heart called?
Answer: pericardium
What is the muscular portion of the heart called?
Answer: myocardium
What is the lining of the myocardium called?
Answer: endocardium
What is the name of the upper cavities of the heart? The lower cavities?
Answer: atria, ventricles
What veins carry blood to the left atrium? The right atrium?
Answer: superior vena Cava, inferior vena Cava, and pulmonary veins
What arteries carry blood away from the left ventricle? The right ventricle
Answer: aorta, pulmonary
Tuesday, October 16, 2007
Monday, October 8, 2007
Thursday, October 4, 2007
Stem cell research
Steve Stice is a university of Georgia stem cell researcher who uses neural cells to detect chemical agents. The cells that are being used now are mouse cells but they die off quickly they only last for 2 weeks but human cells last more that four months. The reason for this device is because it can be used in a war zone or help with homeland security. President Bush and other representatives did not agree with the research because they felt it crossed a moral line with them using aborted babies vs. naturally dead babies. So instead of them using aborted babies they would use babies that were already dead.
My reaction to this article is I agree but I also disagree I agree without them trying to save lives in the time of need for example if someone was hurt in war and was possibly about to die then I would want them to try and save their lives with whatever is needed but I disagree with them using aborted babies because they are not naturally dead they are killed by their parents but I feel that it would be alright to use naturally dead babies to save someone else’s life.
My reaction to this article is I agree but I also disagree I agree without them trying to save lives in the time of need for example if someone was hurt in war and was possibly about to die then I would want them to try and save their lives with whatever is needed but I disagree with them using aborted babies because they are not naturally dead they are killed by their parents but I feel that it would be alright to use naturally dead babies to save someone else’s life.
Tuesday, October 2, 2007
Basic Eye worksheet
The eye is part of which nervous system?
Answer: Central
What types of tissues give the eye protection?
Answer: fatty and connective tissue
What structure in the eye produces tears?
Answer: Lacrimal glands
What acts as an antibacterial layer in the eye?
Answer: conjunctiva
What is the cornea?
Answer: covering of the eye
What layer of the eye contains the rods and cones?
Answer: back of the eye
What is the function of the rods? The cones?
Answer: Rod- Night black and white vision and cones – color vision
What is the colored part of the eye?
Answer: Iris
What structure allows light to enter the eye?
Answer: pupil
Answer: Central
What types of tissues give the eye protection?
Answer: fatty and connective tissue
What structure in the eye produces tears?
Answer: Lacrimal glands
What acts as an antibacterial layer in the eye?
Answer: conjunctiva
What is the cornea?
Answer: covering of the eye
What layer of the eye contains the rods and cones?
Answer: back of the eye
What is the function of the rods? The cones?
Answer: Rod- Night black and white vision and cones – color vision
What is the colored part of the eye?
Answer: Iris
What structure allows light to enter the eye?
Answer: pupil
basic ear worksheet
Pinna- directs sound waves into the auditory canal.
Tympanic membrane- makes sound louder
Ossicles- magnify sound vibrations
Cochlea- cause movement within the fluid of the cochlea
Semicircular canals- deals with balance
What three bones make up the ossicles? - Malleus, incus, stapes.
What is the function of hairs in the ear? - The hairs in turn stimulate nerve impulses to be sent to the brain by way of the auditory nerve.
Tympanic membrane- makes sound louder
Ossicles- magnify sound vibrations
Cochlea- cause movement within the fluid of the cochlea
Semicircular canals- deals with balance
What three bones make up the ossicles? - Malleus, incus, stapes.
What is the function of hairs in the ear? - The hairs in turn stimulate nerve impulses to be sent to the brain by way of the auditory nerve.
Monday, October 1, 2007
Basic Nervous System Worksheet
What does CNS and PNS stand for?
Answer: Central Nervous System- consists of the brain and spinal cord and it controls thinking, memory and behavior. All body activities are controlled except chemical functions.
Peripheral Nervous System- Lies outside the brain and spinal cord and serves as a connection of message system between the various organs and muscles of the body and the CNS.
What are the parts of the CNS?
Answer: Brain and Spinal Cord
Describe something that you do on a regular basis that your PNS controls.
Answer: urinating
What are the two divisions of the autonomic nervous system and what does each control?
Answer: Sympathetic – controls the body in times of stress, worry, fear, emergency.
Parasympathetic- brings the body back to a normal state and allows rest and relaxation to occur.
What are the three main types of neurons? What is the function of each?
Answer: Axons- Sends information
Dendrite- Receives information
Cell body- contains nucleus.
What is the function of the axon of a nerve cell? The dendrite?
Answer: Sends information, Dendrite- Receives information
What is a synapse?
Answer: Region between axon of one neuron and dendrite of another.
Neurotransmitters transmit nerve impulses across synapse.
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