Living Things

1
Introduction to the Human Body Ms. De Los Rios
7th Grade Ch. 11.1 Essential Question How
Does your Body Work? Body Organization How is
Your Body Organized? Pgs. 404-407
2
Ch. 11.1 Vocabulary

• Cell- The basic unit of structure and function in
  living things.
• Cell Membrane- A thin, flexible barrier that
  forms around a cell and controls which substances
  pass into an out of a cell.
• Nucleus- A large organelle that contains the
  cells genetic material in the form of DNA and
  controls many of the cells activities.
• Cytoplasm- A clear jelly like substance that
  contains many cell structures. The cytoplasm can
  be located inside the cell membrane
  (prokaryote/no nucleus) or between the cell
  membrane and nucleus (in eukaryotes/nucleus)
• Tissue- A group of similar cells that perform a
  specific function.
• Muscle Tissue- A body tissue that contracts, or
  shortens, making body parts move,
• Nervous Tissue- A body tissue that carries
  electrical messages back and forth between the
  brain and the other parts of the body.
• Connective Tissue- A body tissue that provides
  support for the body and connects all its parts.
• Epithelial Tissue- A body tissue that covers the
  interior and exterior of the body.
• Organ- A body structure that is composed of
  different kinds of tissue that work together.
• Organ System- A group of organs that work
  together, performing major functions.

3
Fig. 1 Body Organization pg. 405
Body Organization This diagram tracks the levels
of organization in the body. What are the missing
level names?
4
How is Your Body Organized? Pg. 404

• Every minute of the day, no matter what a
  person is doing, the body is busy at work. Each
  ______of the body has a ______ ___to do. All the
  _____ work ________ to keep the body functioning
  smoothly and effectively. The ____________ of the
  body is in part responsible for this smooth
  functioning.

5
How is Your Body Organized? Pg. 405

• The levels of organization in the human body
  consist of
• cells tissues organs
  organ systems
• A_____is the basic unit of structure and function
  in a living thing, or organism. Almost all cells
  in the human body have the same basic parts.
• cytoplasm cell membrane
  nucleus
• The ______________ forms the outside border of a
  cell.
• The __________directs the cells activities and
  holds information that controls a cells
  function.
• The______________ which forms the rest of the
  cell, is a clear, jellylike substance that
  contains many cell structures, each of which has
  a specific job to perform.
• FIGURE 2

6
Body Organization pg. 406
Tissues A tissue is a group of similar cells that
perform the same function. Identify the Main
Idea
7
How is Your Body Organized? Tissues pg. 406

• Tissue- is a group of similar cells that perform
  the same function.
• Your body has several types of tissues
• Muscle tissue, Nervous tissue, Connective tissue,
  and Epithelial tissue
• Muscle tissue is made up of muscle cells. Muscle
  tissue contracts and thus makes body parts move.
• Nervous tissue, made up of nerve cells, carries
  electrical messages to and from the brain and
  spinal cord, thereby directing and controlling
  body processes.
• Connective tissue provides support for the body
  and connects all its parts. Connective tissue can
  be made up of bone cells and fat cells.
• Epithelial tissue covers both the internal
  (inside) and external (outside) surfaces of the
  body.

8
Fig. 3 Body Organization pg. 407
Organs The heart, like other organs, is made of
different tissues. Which tissue matches each
function?
9
How is Your Body Organized? pg. 407-408

• Organs
• Examples of organs ___________,_____________,____
  ______
• An ________ is a group of different types of
  tissue performing a specific function.
• Each type of tissue in an organ does its specific
  job and in that way contributes to the organs
  function.
• Each _______ is part of an _______ ________, that
  work together to perform a major function.
• Organ systems also work together, forming the
  next level of organization, the _____________.
  APPLY IT!!!

10
Body Organization
Organization of an Organism Tissues are made from
cells organs are made from tissues that perform
different functions.
11
Body Organization
Systems and Organisms Each organ in the body is
part of an organ system. Starting with cells, the
levels of organization in an organism become more
and more complex.
12
Body Organization pg. 408
Body Systems, Part 1
Fig. 4
13
Body Organization pg. 409
Body Systems, Part 2
Assess your Understanding pg. 409