What does extension mean in anatomy?
Extension: The process of straitening or the state of being strait. Extension of the hip and knee joints is necessary to stand up from the sitting position.
What’s flexion and extension?
Flexion and extension are movements that take place within the sagittal plane and involve anterior or posterior movements of the body or limbs. In the limbs, flexion decreases the angle between the bones (bending of the joint), while extension increases the angle and straightens the joint.
What is abduction adduction flexion and extension?
Abduction is the movement away from the midline of the body. Adduction is the movement toward the middle line of the body. Extension is the straightening of limbs (increase in angle) at a joint. Flexion is bending the limbs (reduction of angle) at a joint. Rotation is a circular movement around a fixed point.
What is horizontal extension in anatomy?
Refers to movement where the angle between two bones decreases and on the horizontal plane. Horizontal extension: Refers to movement where the angle between two bones increases and occurs on the horizontal plane. Lateral Flexion: Refers to movement of the spine laterally away from the midline of the body.
What does extension mean medically?
Medical Definition of extension 1 : the stretching of a fractured or dislocated limb so as to restore it to its natural position. 2 : an unbending movement around a joint in a limb (as the knee or elbow) that increases the angle between the bones of the limb at the joint — compare flexion sense 1. extension.
What does extended mean in medical terms?
(eks-tend’), To straighten a limb, to diminish or extinguish the angle formed by flexion; to place the distal segment of a limb in such a position that its axis is continuous with that of the proximal segment.
What is extension medical term?
Medical Definition of extension 1 : the stretching of a fractured or dislocated limb so as to restore it to its natural position. 2 : an unbending movement around a joint in a limb (as the knee or elbow) that increases the angle between the bones of the limb at the joint — compare flexion sense 1.
What is an example of extension?
Extension is the opposite of flexion, describing a straightening movement that increases the angle between body parts. For example, when standing up, the knees are extended. Extension of the hip or shoulder moves the arm or leg backward.
What is the difference between extension and abduction?
Extension – straightening a joint. Ball and socket joints also allow types of movement called abduction, adduction, rotation and circumduction. Abduction – movement away from the midline of the body.
What is a horizontal extension?
Horizontal extension refers to instances when an existing brand name is applied to. a new product, in either the same product class (line extension) or in a new product.
What is the difference between abduction and extension?
Extension – straightening a joint. This occurs when the angle of a joint increases, for example the elbow when throwing a shot put. Ball and socket joints also allow types of movement called abduction, adduction, rotation and circumduction. Abduction – movement away from the midline of the body.
What is the medical definition of a lumen?
Medical Definition of lumen. 1 : the cavity of a tubular organ or part the lumen of a blood vessel. 2 : the bore of a tube (as of a hollow needle or catheter) 3 : a unit of luminous flux equal to the light emitted in a steradian by a uniform point source of one candle intensity. Keep scrolling for more.
Which is an example of a body structure with a lumen?
Examples of body structures that have a lumen include the large intestine, small intestine, veins, and arteries. The name comes from the Latin “lūmen,” one meaning of which is “light.”
Where is the lumen located in the small intestine?
The lumen is inside the intestine and it’s important to keep it clear. The wall of the small intestine is composed of several parts, with the interior being called the lumen. More in Digestive Health. The lumen is the opening inside a tubular body structure that is surrounded by body tissue known as an epithelial membrane.
Why is the size of the lumen measured?
This is probably because the lumen is an opening inside a tube, and light will pass through a tube. The size of the lumen in the intestine might be measured in order to determine if the intestinal walls are thickening.