184
Figure 126.
There are two main body cavities in vertebrate animals. The cranial cavity
and spinal cavity are
both located in the dorsal cavity. The thoracic cavity and the abdominopelvic cavity
are located in the ventral
cavity. The diaphragm separates the thoracic cavity from the abdominopelvic cavity.
An imaginary line
parallel to the pelvis bones divides the abdominopelvic cavity into the abdominal cavity
and the pelvic
cavity
96
.
7.1 Reading #3:
Animal Primary Tissues
Epithelial, connective, muscle, and nervous tissues are the four main types of tissues found in
multicellular, complex animals. Remember that tissues are collections of comparable cells (cells
carrying out related functions). Organs with specific, specialized functions within the body are created
when these tissues are combined to form organs like the skin or kidney. To carry out specific tasks,
organs are grouped into organ systems. Examples include the circulatory system, which is made up
of the heart and blood vessels, and the digestive system, which is made up of a number of organs
including
the stomach,
intestines, liver, and pancreas. An organism is
made up of multiple organ
systems.
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