This blog post is going to help you with pharyngeal or branchial arches mnemonics, don't forget to share the help with others.
Derivatives of Pharyngeal or Branchial Arches:-
First Pharyngeal Arch
Derivative of 1st Branchial Arch are a compilation of M and T:-
M-T
Muscles
2M4T
Mastication muscles (Temporalis,Masseter,Pterygoid)
Mylohyoid
Tensor tympani
Tensor veli palatini
Tongue- anterior two third
digasTric muscle- anterior belly
Skeletal
4M2T
Maxilla
Malleus + incus
Meckel cartilage
sphenoMandibular ligament
Temporal bone- squamous part
zygomaTic
Nerve
MT
Mandibular division of Trigeminal nerve
Artery
Maxillary artery
Second Pharyngeal Arch
Derivative of 2nd Branchial Arch can be learnt as S and as:-
S
Muscles
Stapedius
Stylohyoid
Smile- muscles of facial expression
BAPP as-
Buccinator
Auricular muscles
Platysma
Posterior belly of digastric muscle
Skeletal
Stapes
Styloid process
Stylohyoid ligament
lesser cornua and upper half of body of hyoid
reichert's cartilage
Nerve
Seventh nerve (facial nerve)
Artery
Stapedial artery
hyoid artery
Third Pharyngeal Arch
Derivatives of 3rd Branchial Arch are like GlossoPharyngeus, that is, GP:-
GP
Muscles
styloPharyngeus
Skeletal
Greater cornea and lower half of hyoid
Nerve
GlossoPharyngeal nerve
Arteries
common carotid artery and internal carotid artery
Fourth Pharyngeal Arch
Derivatives of 4th Branchial Arch can be traced back to Thyroid:-
Muscle
cricoThyroid
pharyngeal constrictors
levator veli palatini
Skeletal
Thyroid cartilage
epiglottic cartilage
Nerve
superior laryngeal nerve
Artery
4th left- Aortic arch
4th right- Subclavian arch
Sixth Pharyngeal Arch
Derivative of 6th Branchial Arch can be traced back to Larynx as:-
Muscles
Larynx- all intrinsic muscles except cricothyroid
Skeletal
Larynx- all cartilages except thyroid (cricoid,corniculate,cuneiform and arytenoid)
Nerve
Laryngeal nerve- recurrent
Artery
6th left- Pulmonary artery and Ductus arteriosus
6th right- Pulmonary artery
This is a way to learn the derivatives of pharyngeal arches. But it's always better to understand things than to mug up.
-Learning nerve supply followed by derivatives is highly recommended because that will make your basics further strong.Labels: Anatomy, First year MBBS, Students
