Download Structures and functions of the muscular system

What are the four
types of bones where
would one look to
find each?
 The muscular system creates bodily
movement, maintains posture, and
produces heat.
 The muscular system consists of three
types of muscle tissue, which include
skeletal, smooth, and cardiac.
Muscles can be classified as
voluntary or involuntary.
Voluntary muscles are under the
control of the animal;
involuntary muscles are not.
 Skeletal muscle, or striated voluntary
muscle, contracts to produce bodily
movement.
 existing under control of the somatic
nervous system
 As its name suggests, most skeletal muscle
is attached to bones by bundles of collagen
fibers known as tendons.
A tendon is connective tissue
that attaches muscle to bone.
Skeletal muscles are the largest
component of red meat animal
products
 Smooth muscle, or unstriated involuntary muscle, is
located in reproductive, digestive, and urinary organs.
 Contraction of smooth muscle is involuntary and is
necessary for proper functioning of internal organs.
 Smooth muscle is fundamentally different from
skeletal muscle and cardiac muscle in terms of
structure, function, regulation of contraction, and
excitation-contraction coupling
 Small arteries, veins, and lymphatic
vessels, the urinary bladder, uterus,
male and female reproductive
tracts, gastrointestinal tract,
respiratory tract, and iris of the eye
to name a few.
For example,
smooth muscle
contractions in the
intestines permit
the movement of
food products.
 Cardiac muscle is a
striated muscle that
is found only in the
heart. Contraction of
the cardiac muscle is
involuntary and
essential for proper
blood circulation.
Cardiac
muscle is
found on
the wall of
the heart
Cardiac muscle shares
similarities with skeletal muscle
with regard to its striated
appearance and contraction,
with both differing significantly
from smooth muscle cells.