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locomotor system (bones (Skull: The skull protects the brain and supports…
locomotor system
bones
Skull: The skull protects the brain and supports the soft tissue of the head. (It contains 22 bones.)
Maxilla: The maxilla is an irregular shaped bone that makes up the upper portion of the jaw.
Mandible: The mandible is also known as the jaw bone.
Clavicle: The clavicle is also known as the collarbone. It consists of a pair of long bones that connect the scapula to the sternum.
Vertebra: The vertebra is also known as the spinal column.
Scapula: The scapula is also known as the shoulder blade and it articulates with the humerus. It is a triangular, flat bone.
Sternum: The sternum is also known as the breastbone. It is a long, narrow and flat bone that is the keystone to the rib cage. It also helps to stabilize the thoracic skeleton.
Ribs: The ribs are long curved bones which form a cage that protects the organs found in the chest.
Humerus: The humerus is the largest bone in the upper part of the arm. Radius: The radius is the shorter of two long bones that are found in the lower part of the arm.
Pelvis: The pelvis is the bone that connects the base of the spine with the legs.
Ulna: The ulna is the longer of the two bones that are found in the lower part of the arm.
Sacrum: The sacrum is part of the vertebra. It is wedge shaped and rests at the end of the spine where it intersects with the hip bones to form the pelvis.
Metacarpals: The metacarpals make up the knuckles on the hands.
Phalanges: Phalanges are the bones that exist in each finger and each toe. In total, there are 56 phalanges with 14 in each hand.
Femur: The femur is the thigh bone and it is the longest, strongest and heaviest bone of the human body.
Patella: The patella is also known as the kneecap.
Tibia: The tibia is also known as the shin bone. The lower half of the leg contains two long bones. The tibia is the thicker of the two where the fibula is the thinner.
Fibula: The fibula is a long, thin bone of the lower half of the leg. It runs parallel to the tibia.
Tarsals and Metatarsals: Tarsals and metatarsals are bones found in the foot.
Skeletal muscles Smooth muscles. Cardiac muscles
The deltoid muscle is located at the shoulders and includes an interior head and a middle head. It is worked when the arm is rotated.
The bicep muscle is located at the upper part of the arm and will bulge when you make a fist. This muscle flexes the arm.
The triceps muscles are also located in the upper part of the arm and work when the arm is extended. It extends the forearm at the elbow joint.
The rectus femoris muscle is located in the leg and works the tibia and fibula. If flexes the thigh at the hip and extends the leg at the knee.
The frontalis muscle is located around the eyes and the nose on the face and is responsible for raising the eyebrows and wrinkling the forehead.
The risorius muscle is also located in the face and is responsible for drawing the lips into a smile.
The hamstrings muscles (of which there are three) are located in the upper leg and work to bend the knee.
The quadriceps muscles (of which there are four) are located in the upper leg and work to extend the knee.
The tibialis anterior muscle is located at the back of the lower leg and works to raise the front of the foot.
The soleus muscle (also known as the calf muscle) is located at the back of the lower leg and works to raise the heel when the leg is bent.
joints
Planar Joints. Planar joints have bones with articulating surfaces that are flat or slightly curved faces.
Hinge Joints.
Condyloid Joints.
Saddle Joints.
Ball-and-Socket Joints.
muscles