Search results
Results from the WOW.Com Content Network
A muscle spindle, with γ motor and Ia sensory fibers. A type Ia sensory fiber, or a primary afferent fiber, is a type of afferent nerve fiber. [1] It is the sensory fiber of a stretch receptor called the muscle spindle found in muscles, which constantly monitors the rate at which a muscle stretch changes. The information carried by type Ia ...
When a muscle is stretched, primary type Ia sensory fibers of the muscle spindle respond to both changes in muscle length and velocity and transmit this activity to the spinal cord in the form of changes in the rate of action potentials. Likewise, secondary type II sensory fibers respond to muscle length changes (but with a smaller velocity ...
Collectively, the ascending sensory fibers are called the dorsal column because ascending fibers gather at the dorsal funiculus in the spinal cord. [5] The dorsal funiculus is located between the dorsal horn and the medial line in the spinal cord. There are three types of neurons in the pathway: first-, second-, and third-order neurons.
Upper Limb, Arm, Anterior compartment, right/left coracoid process of scapula: medial surface of humerus: brachial artery: musculocutaneous nerve: flexes and adducts shoulder: 2 1 biceps brachii: Upper Limb, Arm, Anterior compartment, right/left short head: coracoid process of scapula long head: supraglenoid tubercle: radial tuberosity ...
The other two classes are the group B nerve fibers, and the group C nerve fibers. Group A are heavily myelinated, group B are moderately myelinated, and group C are unmyelinated. [1] [2] The other classification is a sensory grouping that uses the terms type Ia and type Ib, type II, type III, and type IV, sensory fibers. [1]
The capsule is connected in series (along a single path) with a group of muscle fibers (10-20 fibers [3]) at one end, and merge into the tendon proper at the other. Each capsule is about 1 mm long, has a diameter of about 0.1 mm , and is perforated by one or more afferent type Ib sensory nerve fibers ( Aɑ fiber ), which are large (12-20 μm ...
The leg muscles acting on the foot are called the extrinsic foot muscles whilst the foot muscles located in the foot are called intrinsic. [28] Dorsiflexion (extension) and plantar flexion occur around the transverse axis running through the ankle joint from the tip of the medial malleolus to the tip of the lateral malleolus.
The lateral malleolus is found at the foot end of the fibula, of a pyramidal form, and somewhat flattened from side to side; it descends to a lower level than the medial malleolus. The medial surface presents in front a smooth triangular surface, convex from above downward, which articulates with a corresponding surface on the lateral side of ...