The locomotor system is formed by bones, joints and skeletal muscles and represents the integration between the Skeletal System and the Muscular System.
The locomotor system responsible for the support, locomotion and movement of the body.
Let's learn about the two systems that make up the Locomotor System:
Skeletal System
The skeletal system's function is to support the body, protect internal organs, store minerals and ions, and produce blood cells.
Skeleton
The skeleton is made up of several bones and associated structures, such as cartilage, tendons and ligaments.
The skull is the most complex structure in the skeleton.
THE spine it supports the body. It is formed by vertebrae, which alternate with intervertebral discs.
The skeleton is divided into two large bone sets:
- Axial Skeleton: consisting of the bones of the head and spine;
- appendicular skeleton: Consisting of the bones of the arms and legs.
Main bones of the human body
Want to know more about the skeleton and bones? Read too Skeletal System.
Bones can join together through joints.
At joints they consist of the contact area between two distinct bones, mediated by different types of connective tissue.
They can be of the type: Real Estate, Semi-Mobile or Furniture.
In a mobile joint, the bones stay in place due to the ligaments, resistant cords, consisting of fibrous connective tissue.
Learn more about:
- Human Body Joints
- Shoulder Joints
Muscle System
The muscular system is represented by the muscles.
The muscular system is responsible for body stability, movement production, maintenance of body temperature and body support.
Main muscles of the human body
Muscles and Muscle Contraction
Muscles are made up of muscle tissue, whose cells have the ability to contract.
One of the main properties of muscles is their ability to contract. This is what makes the movements possible.
Muscle contraction can be of the isotonic or isometric type. Isotonics occur when the muscle shortens during contraction. If no shortening occurs, the contraction is isometric.
Learn more about Muscular contraction.
Types of Muscles
Muscles can be of three types: skeletal striatum, cardiac striatum and smooth.
Skeletal striated muscle constitutes a large part of the muscle mass in the human body.
Their ends are usually sharp and end in fibrous strands of shaped dense connective tissue, the tendons.
This muscle has voluntary and vigorous contraction.
The striated cardiac muscle is the heart muscle. It has involuntary and rhythmic contraction.
Smooth muscle is found in visceral organs such as the stomach, intestine, bladder, uterus, among others. It has involuntary and slow contraction.
Want to know about action and muscle types? Read too Muscle System and Muscle tissue.
Exercises
(UECE-2002) - The muscle fibers are associated in bundles, constituting the muscles. Its contraction makes it possible to carry out movements in the body. Peristaltic movements are produced by muscle tissue of the type(s). a) skeletal striatum
b) smooth
c) cardiac striatum
d) skeletal, smooth and cardiac striatum
b) smooth
(Unicamp 2014) - Cardiac muscle tissue has fibers:
a) smooth, voluntary and aerobic contraction
b) smooth, involuntary and anaerobic contraction
c) striated, voluntary and anaerobic contraction
d) striated, involuntary and aerobic contraction
d) striated, involuntary and aerobic contraction
(UFLA/2009) - The connective tissue found in the tendons that join the muscles to the bones is classified as
a) loose connective tissue
b) cartilaginous connective tissue
c) dense shaped connective tissue
d) dense unmodeled connective tissue
c) dense shaped connective tissue
Also test your knowledge with exercises on the skeletal system.
