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42403

GENERAL STRUCTURE AND INNERVATION OF SPINDLE MUSCLE OF THE DABB LIZARD, Uromastix acanthinura

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Last updated: 04 Jan 2025

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Abstract

The structure and innervation of spindle muscle in Uromastix acanthinura was studied. The skeletal muscles were stained with silver impregnation, dissociated and mounted in glycerin. The spindles were completely isolated from the extrafusal muscle fibers. It was found that in the lizard the spindles had only a single intrafusal fiber, they were of two types: 1-A long capsule with a long indistinct closely fitted capsule surrounding the muscle fiber and afferent nerve endings. 2-A short capsule spindle with a broad prominent capsule that extended for a short distance along the intrafusal muscle fiber. In long spindles the sensory ending entered the capsule and branched at the point of entrance and then ran for a distance on the top of  intrafusal fiber. In short spindles, the sensory ending entered the capsule and then branched into a number of fine filaments each came in contact with the intrafusal fiber. 3-A complex spindles were observed and they were having two forms:     a-Paired linkage where spindles lay side by side.    b-Tandem spindle which contained two adjacent sensory regions. 4-The extrafusal muscle fibers were of two types:  a-A granular extrafusal muscle fibers which were innervated by motor nerve fibers ending in end plates.  b-Granular extrafusal muscle fibers which were innervated by motor nerve fibers ending in terminations of grape.             

DOI

10.21608/jpd.2010.42403

Keywords

Spindles muscle, Iliotibialis muscle, dabb lizard, Uromastix acanthinura

Authors

First Name

Amal

Last Name

El-Tarhonui

MiddleName

-

Affiliation

Department of Zoology, Faculty of Science, Garyounis University, Libya.

Email

-

City

lybia

Orcid

-

First Name

Soad

Last Name

Saleh

MiddleName

-

Affiliation

Department of Zoology, Faculty of Science, Garyounis University, Libya.

Email

-

City

Lybia

Orcid

-

Volume

15

Article Issue

1

Related Issue

6665

Issue Date

2010-01-01

Receive Date

2009-09-08

Publish Date

2010-01-01

Page Start

27

Page End

36

Print ISSN

1110-2543

Online ISSN

2682-3322

Article File

JPD_Volume 15_Issue 1_Pages 27-36.pdf

PDF . 771.8kB

Link

https://jpd.journals.ekb.eg/article_42403.html

Detail API

https://jpd.journals.ekb.eg/service?article_code=42403

Order

2

Type

Original Article

Type Code

867

Publication Type

Journal

Publication Title

Journal of Productivity and Development

Publication Link

https://jpd.journals.ekb.eg/

MainTitle

GENERAL STRUCTURE AND INNERVATION OF SPINDLE MUSCLE OF THE DABB LIZARD, Uromastix acanthinura

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Type

Article

Created At

22 Jan 2023