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Cranial Nerves and Plexuses Optic Nerve (N.II) Rizqi, Amanda Suana; Sugiyanto, Aqilla Nasywa Nabila; Febianisa, Tabitha Afifah; Zulkifli, Yasmin Sabrina; Paradiesta, Andi Frieskha Naurah; Azzahra, Anis Aura; Rofilah, Alita Khainur; Sugiono, Muhammad Rafly Adrian; Fauzan, Naufal Revaldy; Haikal, Muhammad; Rifki, Muhammad
Jurnal Biologi Tropis Vol. 25 No. 4 (2025): in Progress
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4.10124

Abstract

Cranial nerves are an integral part of the peripheral nervous system, playing a crucial role in transmitting afferent and efferent nerve impulses, particularly in the head and neck area. Unlike spinal nerves, cranial nerves have distinct functional nuclei in the brainstem, grouped into sensory (posterior and lateral) and motor (anterior) nuclei. The optic nerve is a purely afferent (sensory) nerve, responsible for transmitting visual information from rod and cone receptors in the retina to the lateral geniculate nucleus (LGN) and superior colliculus (SC) in the thalamus. The optic nerve's innervation pathway begins with retinal ganglion cells, which form nerve fibers, pass through the optic canal, and then cross at the optic chiasm. Disruption of this pathway can lead to various clinical manifestations, such as vision loss or visual field impairment, which will be discussed further. Therefore, a thorough understanding of the anatomy and function of the optic nerve is crucial for the diagnosis and treatment of neuro-ophthalmological conditions.
A Literature Review: Acute Tonsillitis Azzahra, Anis Aura; Khotimah, Andi Husnul; Sugiono, Muhammad Rafly Adrian; Zulkifli, Yasmin Sabrina
Jurnal Biologi Tropis Vol. 25 No. 4 (2025): in Progress
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4.10202

Abstract

Acute tonsillitis is a bacterial infection characterized by painful swallowing, swelling, and redness of the tonsils. The purpose of this literature review is to improve understanding of acute tonsillitis, which is essential for patient care and a favorable prognosis. The method used is a systematic literature review. The results of this literature review indicate that tonsillitis is a common inflammatory condition affecting the palatine tonsils, accounting for approximately 1.3% of outpatient visits. The condition is typically caused by viral or bacterial infections and manifests with symptoms such as sore throat, fever, odynophagia, and tonsillar erythema or exudate. Viral tonsillitis is often self-limiting; however, bacterial causes most notably Streptococcus group A can lead to significant complications, including peritonsillar abscess, acute rheumatic fever, and poststreptococcal glomerulonephritis. Prompt and accurate diagnosis is essential to distinguish viral from bacterial etiologies. Clinical scoring systems, such as the Centor or McIsaac criteria, and microbiological testing, help guide appropriate management and reduce unnecessary antibiotic use. Early identification and intervention are critical to preventing complications and promoting effective recovery. In conclusion, the prognosis for acute tonsillitis is generally good, with most cases healing on their own without complications.