unipennate

sem·i·pen·nate

(sem'ē-pen'āt), [TA]
1. Having a feather arrangement on one side; resembling one-half of a feather. 2. Denoting certain muscles with fibers running at an acute angle from one side of a tendon.
Synonym(s): unipennate ☆ , demipenniform

u·ni·pen·nate

(yū'ni-pen'āt)
1. Having a featherlike arrangement on one side; resembling one half of a feather.
2. Denoting certain muscles with fibers running at an acute angle from one side of a tendon.
[uni- + L. penna, feather]
References in periodicals archive ?
It seemed that the VI muscle, which is a bipennate muscle, exhibited higher stiffness than VL and VM, in which the fiber orientation is unipennate. This difference may indicate that the propagation of shear waves is influenced by the muscle structure, such as muscle fiber orientation [23].
The ex- tensor carpi radialis brevis (ECRB) muscle is unipennate, originates on the posterior side of the lateral epicondyle of the humerus, along with superficial muscles of the posterior region of the forearm, in the deep fascia of the forearm, in the radial collateral ligament and fibrous septum that separates it from the extensor muscle of the fingers.
Both muscles are unipennate, cross only the knee joint, and thereby function to extend the leg at the knee.
It was decided to perform a primary tendon transfer considering the significant delay in presentation and the fact that flexor pollicis longus is a unipennate muscle might not respond well to proximal repair.
It is largely agreed upon that the superior segments are unipennate with parallel fibers that insert anteriorly and distally on the humerus, while the inferior fibers are multipennate and insert mostly posterior and proximally on the humerus.
In the present study, second lumbrical is unipennate in all the 40 specimens.
Windisch observed unipennate fourth lumbrical muscle.
The fascicles of the psoas major are approximately similar in length throughout the lumbar spine and have a unipennate fiber orientation.
The extensor digiti IV proprius is a unipennate and elongated muscle that is at the middle third of the intermuscular septum that limits with the extensor digitorum communis.