Test next week
(Week 3)
- The exam
is DUE THURSDAY of Week 3, but it will become
available on Monday of Week 3. You will take
Exam 3 just like submitting study questions,
but you won't have the questions and answers
in front of you. You will be
timed. You are expected to take this
exam, by yourself, not with a partner.
You can use your book, and your notes. You
will have 60 minutes to take it. Make
sure you take it at a time you will not be
interrupted. If you have to
take it late, please contact me BEFORE the
exam date. Late exams must be taken
in the testing center where you are only
allowed 1 3x5 note card.
- Be sure to take the Review Quiz this week (Week 2), which is intended to help improve your score on Exam 1.
Lecture
2B: The Human Body
I How
the
human body is put together and organized
The human body is
composed of billions of cells that need energy, water,
other nutrients and oxygen. Cells are
organized into tissues and tissues are grouped to form
organs.
During this lecture, I will be comparing The remarkable body to The remarkable plant since it's plants that give us so much of what we need and we return the favor by giving them some of what they need, carbon dioxide).
As you can see with the illustration below, plants also have organs.
During this lecture, I will be comparing The remarkable body to The remarkable plant since it's plants that give us so much of what we need and we return the favor by giving them some of what they need, carbon dioxide).
As you can see with the illustration below, plants also have organs.
II Body Systems
- Communication Systems (Hormonal and Nervous Systems)
- System for Digestion and Absorption
- The Parts of Digestion and Absorption
- Circulatory System
- Storage System
- Excretory System
The
overall objective of ALL of these body systems (human
AND plant) is to help cells work so our body (or a
plant's body) can survive and reproduce.
1. Communication Systems (Hormonal and Nervous Systems)
Hormones are chemical messengers secreted by one part of the body into the blood to tell another group of cells to do something.
For example, the hormone insulin is secreted by the pancreas when it perceives that blood sugar has risen.
The insulin goes into blood where it travels to cells everywhere and tells the cells to take in sugar.
Merriam-Webster Dictionary defines the nervous system as the bodily system that in vertebrates is made up of the brain and spinal cord, nerves, ganglia, and parts of the receptor organs and that receives and interprets stimuli and transmits impulses to the effector organs.
Plants also have something like our nervous system which receives information and communicates. Consider vines. When the vine above realized that something was nearby that it could climb to get more access to the sun, within hours it had sent out something that could hook around that post.
Plants also have various responses to light. The flowers of the 4 o'clock plant shown below
4:00 pm
7:30 pm
1. Communication Systems (Hormonal and Nervous Systems)
Hormones are chemical messengers secreted by one part of the body into the blood to tell another group of cells to do something.
For example, the hormone insulin is secreted by the pancreas when it perceives that blood sugar has risen.
The insulin goes into blood where it travels to cells everywhere and tells the cells to take in sugar.
Merriam-Webster Dictionary defines the nervous system as the bodily system that in vertebrates is made up of the brain and spinal cord, nerves, ganglia, and parts of the receptor organs and that receives and interprets stimuli and transmits impulses to the effector organs.
Plants also have something like our nervous system which receives information and communicates. Consider vines. When the vine above realized that something was nearby that it could climb to get more access to the sun, within hours it had sent out something that could hook around that post.
Plants also have various responses to light. The flowers of the 4 o'clock plant shown below
4:00 pm
7:30 pm
