Download Human Body Systems

Human Body Systems
I.
Levels of Organization
A. Cells 

 Organ Systems
B. Tissue:
C. Organ:
D. Organ system:
E. The 11 systems of the body work together to maintain __________________
II.
Systems
Name
Structures
Nervous
Integumentary
Skeletal
Muscular
Circulatory
Respiratory
Function
Coordinates the body’s response to
changes in its internal and external
environments
Barrier against infection and injury;
helps regulate body temp; provides
protection against UV rays
Supports body; protects organs;
allows movement; store minerals;
produces red blood cells
Works with the skeletal system to
produce voluntary movement; helps
circulate blood and move food
through the digestive system
Brings O2, nutrients, and hormones
to cells; fights infections; regulates
body temp
Nose, pharynx, larynx, trachea,
bronchi, bronchioles, alveoli, lungs
Digestive
Converts food into simpler
molecules that can be used by cells
of the body; absorbs food
Excretory
Eliminates waste products of
metabolism from the body; maintains
homeostasis
Endocrine
Reproductive
Lymphatic
Hypothalamus, pituitary, thyroid,
parathyroids, adrenals, pancreas,
ovaries, testes
Males: testes, epididymis, vas
deferens, urethra, and penis
Females: ovaries, Fallopian tube,
uterus, and vagina
Helps protect the body from disease;
collects fluid from lost blood vessels
and returns the fluid to the
circulatory system
The _____________________ system consists of many of these different systems.
III.
Types of tissues
A. ________________ tissue:
i.
most abundant tissue in body
ii.
controls the internal movement of materials
iii.
controls the external movements of the body
iv.
ex. heart
B. ________________ tissue:
i.
cells are closely packed
ii.
covers the surface of the body
iii.
lines internal organs
iv.
glands are made up from this type of tissue
v.
ex. lines heart chamber to prevent fluid leakage
C. ________________ tissue:
i.
holds organs in place
ii.
binds different parts of the body together
iii.
keeps organs flexible, but strong
iv.
pads and insulates some body parts
v.
ex. tendons and ligaments
D. _________________ tissue
i.
receives messages from the body’s external and internal environments,
analyses the data, and directs the response
ii.
ex. nervous tissue in the heart controls the rate at which it beats
IV.
Maintaining Homeostasis
A. The cells of the body must be kept at a temperature within a specific range, supplied with
energy through cellular respiration, bathed in fluid, and cleansed of their waste products.
B. ________________________________ (Negative Feedback System)
i.
ii.
Process by which the product of a system shuts down the system or limits it
operation
works like a thermostat
iii.
ex. ______________________ (in brain) contains nerve cells that monitor the
body’s temperature
1. if temp is ________, the hypothalamus produces chemical signals that
______________ cell activity which produces heat
2. The hypothalamus detects increase in temp which will _____________ the
production of those chemicals which prevents temps from rising to
dangerous levels