Medical Definition of temporal line
: either of two nearly parallel ridges or lines on each side of the skull that begin as a single ridge on the temporal bone, run upward and backward from the zygomatic process above the temporal fossa, divide into upper and lower lines, and continue on the parietal bone.
Where are the temporal lines located?
The superior temporal line is an arching ridge along the lateral surface of the skull; it begins as a continuation of the upper posterior border of the zygomatic bone and continues as a broad arch along the frontal and parietal bones, above and roughly parallel to the upper edge of the temporal bone.
Do humans have temporal line?
Running upward and backward from the zygomatic is a well-marked line, the temporal line, which divides into the upper and lower temporal lines, continuous, in the articulated skull, with the corresponding lines on the parietal bone.
Does everyone have Sutural bones?
They are found in both sexes as well as in both sides of the skull. Approximately half of Sutural bones are located in the lambdoid suture and fontanel and the masto-occipital suture.
Is the temporal a flat bone?
No, the temporal bone is not a flat bone. Instead, it is usually classified as an irregular bone due to its unusual shape.
What is the temporal process?
Medical Definition of temporal process
: a process of the zygomatic bone that with the zygomatic process of the temporal bone with which it articulates laterally forms part of the zygomatic arch.
What type of bone is temporal?
The temporal bone is a thick, hard bone that forms part of the side and base of the skull. This bone protects nerves and structures in the ear that control hearing and balance.
Where is sphenoid bone?
An unpaired bone located in the cranium (or skull), the sphenoid bone, also known as the “wasp bone,” is located in the middle and toward the front of the skull, just in front of the occipital bone.
Where are the palatine bones?
The palatine bones contribute to the posterior part of the roof of the mouth and floor and lateral walls of the nose, the medial wall of the maxillary sinuses and the orbital floors. Each bone (Fig. 5-66) consists of horizontal and perpendicular plates (laminae) set at right angles to each other.
Do apes have a diastema?
Apes have a gap known as the diastema between the upper incisors and canines. This gap accommodates the enlarged lower canines.
Which came first bipedalism or big brains?
“Bipedalism and big brains are independent evolutionary processes. Hominins started walking bipedally long before the brain expanded, but these trends collided at birth, and we believe this happened much earlier than previously thought.”
Do gibbons have tails?
Do gibbons have tails? Gibbons do not have visible, external tails. One way to spot the difference between a monkey and an ape is to look for a tail. Most monkeys have visible tails, while apes do not.
What is the bone in your forehead called?
The frontal bone forms the forehead. The two parietal bones form the upper sides of the skull; the two temporal bones form the lower sides.
Do skulls have ear holes?
External acoustic meatus (ear canal)—This is the large opening on the lateral side of the skull that is associated with the ear. Internal acoustic meatus—This opening is located inside the cranial cavity, on the medial side of the petrous ridge. It connects to the middle and inner ear cavities of the temporal bone.
