Carpal
bone
Femur
Long Bone
Cylindrical inshape
Acts as a lever and
helps support the
weight of the body
Short Bone
Small and
compact
Designed for
strength and
stability
Bones are classified according to their shapes.
Types of Bones
5.
Scapula Vertebra
Flat Bone
Hasa flat
surface
Serves as a
protector and a
point of muscle
attachment
Irregular Bone
Has a complex
shape
Has a variety of
functions, such
as protection
and providing
support
Bones are classified according to their shapes.
Types of Bones
8.
Producing
Blood Cells
Red andwhite blood
cells are produced in
the bone marrow—a
soft, spongy material
in the hollow centre
of a person’s bones.
Functions of the Skeleton
In adults, most
blood cells are
produced in the
spine, hips, ribs,
and breastbone.
In children, blood cell
production takes
place in the long
bones, like the femur.
9.
The spine ofan average adult
is made up of 26 bones.
coccyx (tailbone)
sacrum
24 individual
vertebrae
Support
It gives shape and
support to the body.
The spine, for
example, helps
humans maintain
an upright position.
Functions of the Skeleton
10.
Protection
Bones protect our
internalorgans.
For example, the skull
protects our brain,
while the ribcage
safeguards the heart
and lungs.
Functions of the Skeleton
The human skull consists
of 22 bones fused together.
These bones cannot move
except for the mandible
(lower jaw).
11.
Movement
Bones team upwith
joints and muscles
to allow movement.
As muscles contract,
they pull on the bones,
enabling people to walk,
run, jump and engage in
various activities.
Functions of the Skeleton
Bones in the
elbows and knees
are joined by
flexible joints.
These joints allow
the bones to glide,
swing or rotate.
12.
It serves asa framework for the body. It is
comprised of bones and connective tissues.
The Human Skeleton
Bones in the human body are grouped
as long, short, flat, and irregular.
Types of Bones
The skeletal system supports the body,
protects organs, allows movement, and
produces red blood cells.
Functions of the Skeleton
A Recap
13.
MUSCULAR SYSTEM
The muscularsystem is responsible for movement, maintaining
posture, and circulating blood throughout the body.
Voluntary Muscles:
Definition: Muscles that can be consciously controlled, like those in your arms and legs.
Involuntary Muscles:
Definition:
Muscles that function automatically, without conscious control, like smooth and cardiac
muscles
Skeletal muscles arefound under the skin.
They are attached to our bones by something called tendons.
Our skeletal muscles help to control movement, balance and posture.
ONE: SKELETAL MUSCLES
16.
Smooth muscles areinvoluntary muscles (this means that we do not need to think about moving them or
remind them to move).
They are in the walls of some of our internal organs and they help those organs to work properly.
The intestine (inside your tummy) and diaphragm (under your lungs) are both types of smooth muscles. This
means the muscles in your digestive system keep doing their thing without any reminders!
intestines
TWO: SMOOTH MUSCLES
17.
The cardiac muscleis the muscle within the heart.
The heart is made up of 3 layers - the thickest layer is the cardiac muscle.
We need our heart to pump blood around the body.
It’s the most important muscle in the body!
The cardiac muscle is an involuntary muscle (meaning it works on its own without any reminders).
THREE: CARDIAC MUSCLES