The muscles that you use to drink are your throat muscles that allows you to swallow and the brachioradialis and infraspinatus muscles which are prominently involved in reaching, forward transfer of the cup to the mouth, and drinking performance and more so than the other muscles.
The longitudinal pharyngeal muscles function to condense and expand the pharynx as well as help elevate the pharynx and larynx during swallowing.
These muscles include the stylopharyngeus (CN IX), salpingopharyngeus (CN X), and the palatopharyngeus (CN X).
As the pharyngeal muscles are involved in creating speech, swallowing and deglutition, and breathing, therapy will treat dysfunctions in abnormal drinking, chewing, and swallowing while correcting the resting posture of the lips, tongue, and jaw by repatterning of facial muscles.
Any condition that weakens or damages the muscles and nerves used for swallowing may cause dysphagia.
For example, people with diseases of the nervous system, such as cerebral palsy or Parkinson's disease, often have problems swallowing.
As you drink through a straw, the buccinator muscle compresses to the cheek.
During forearm flexion, for example lifting a cup, a muscle called the biceps brachii is the prime mover.
Because it can be assisted by the brachialis, the brachialis is called a synergist in this action.
Brachioradialis is a fusiform muscle located in the lateral part of the posterior forearm.
Along with extensor carpi radialis brevis and extensor carpi radialis longus, it comprises the radial group of forearm muscles, which belong to the superficial layer of posterior forearm muscles.