Muscle spindle supply to the bovine jaw muscles.
The jaw-closing muscles of two bovine fetuses average 1,177 muscle spindles on one side of the face: 549 in the masseter, 433 in the temporalis, 192 in the medial pterygoid, and three in the lateral pterygoid. The jaw-opening muscles have no spindles.
D000818:Animals; D002417:Cattle / Q000033:anatomy & histology*; D005333:Fetus; D008409:Mastication; D008410:Masticatory Muscles / Q000294:innervation* / Q000502:physiology; D009470:Muscle Spindles / Q000166:cytology*