The main anatomical feature of the hamate bone is the hamulus, a bony projection located at the distal portion of its palmar surface. The main function of this bone is to connect the distal row of carpal bones with the fourth and fifth metacarpal bones.

What is pterygoid hamulus?

The pterygoid hamulus is a hook-shaped bony process located bilaterally on each medial pterygoid plate of the sphenoid bone, posterior and medial to each maxillary tuberosity. These processes project downward and anterolaterally; serve as attachment for ligaments and a network of muscles.

Which muscle of the soft palate is associated with the hamulus?

The tensor veli palatini muscle originates from the spina ossis sphenoidalis, medial to the oval foramen and foramen spinae, and from the fossa scaphoidea and lateral wall of the pharyngeal tube. The part originating in tubar wall is fixed to the hamulus and functions as dilatators of the pharyngeal tube5,12.

Where does the hamulus extend from?

The pterygoid hamulus as a posterior elongation of the bony nasal passage is extended rostrally so that it serves as an additional origin for the palatopharyngeus muscle, which largely displaces the lumen of each bony nasal passage even in dead animals.

What is a hamulus in anatomy?

In vertebrate anatomy, a hamulus is a small, hook-shaped portion of a bone, or possibly of other hard tissue. In human anatomy, examples include: pterygoid hamulus. hamulus of hamate bone. lacrimal hamulus.

Where is the triquetrum?

The triquetrum is one of eight carpal bones that forms part of the wrist joint. It is a pyramidal shaped bone that can be found in the medial side of the wrist. The name triquetrum is derived from the Latin word triquetrus which means “three-cornered”.

What wraps Pterygoid Hamulus?

The tensor veli palatini muscle is one of the five paired muscles of the soft palate. It is triangular in shape and its tendon wraps around the pulley of pterygoid hamulus to alter the shape of the soft palate.

What is Hamular process?

1. The process at the tip of the perpendicular portion of the palatine bone directed upward and backward. 2. The process of the zygomatic bone that forms the anterior boundary of the temporal fossa.

What does the Palatopharyngeus do?

It extends anteriorly and inferiorly to attach to the palatine aponeurosis. It functions to elevate the palate, drawing it superiorly and posteriorly during swallowing and yawning.

What muscle hooks around the hamulus?

The tensor tympani and tensor palati are actually one muscle with a raphe that wraps around the hamulus notch of the maxilla.

What is Palatoglossus innervated by?

This is the reason that all the other tongue muscles receive innervation from the twelfth cranial nerve (hypoglossal nerve) except the palatoglossus muscle, which is innervated by the tenth cranial nerve (vagus nerve).

What goes through the hook of hamate?

The pisiform-hamate ligament, flexor retinaculum (also known as the transverse carpal ligament), flexor carpi ulnaris tendon, opponens digiti minimi tendon, and flexor digiti minimi tendon all attach to the hook.

Why is it called hook of hamate?

The hamate bone is one of eight carpal bones that forms part of the wrist joint. The word hamate is derived from the Latin word hamulus which means “a little hook”. It is a wedge-shaped bone with a hook-like process that can be found in the medial side of the wrist. Sometimes it is also called unciform bone.

What does a broken hamate bone feel like?

The most common symptom of a fracture of the hook of the hamate is pain. Swelling, bruising, and weakness of grip are also common. The pain may be vague and difficult to reproduce, but should be found when an examiner presses directly on the hook of the hamate bone.

How do you pronounce hamulus?

noun, plural ham·u·li [ham-yuh-lahy].

What is Hamular bursitis?

Pterygoid hamular bursitis is an inflammation of bursae located between the tendon, muscle, and bony prominences. The minimal objective finding in an apparently normal orofacial apparatus and dependence on the subjective symptoms experienced by the patient with widespread referral pattern often perplexes the clinician.

What insects have hamuli?

Hamuli are hook-like setae on the anterior margin of the hind wing which interlock with the recurved posterior edge of the fore wing in the Hymenoptera during flight, making them functionally two winged.