Mar 13, 2020 · 1 / 1 pts This skull shows which of the following taphonomic signatures: A. Soil staining B. Delamination C. Sun bleaching D. Copper staining Correct! A and C B and D Which of the following images represent human taphonomic modifications?
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Identify the bony openings of the skull. The cranium (skull) is the skeletal structure of the head that supports the face and protects the brain. It is subdivided into the facial bones and the brain case, or cranial vault (Figure 1). The facial bones underlie the facial structures, form the nasal cavity, enclose the eyeballs, and support the ...
FOR 106 – Biology at the Crime Scene Summer Online 2021 4 Skull: The typical male skull tends to be larger with greater muscularity. It also tends to be more robust at areas of muscle attachment and biomechanical stress (brow ridges, chin) and more right-angled at the lower jaw, and it exhibits larger joint surfaces where the lower jaw or mandible connects to the braincase …
In the adult, the skull consists of 22 individual bones, 21 of which are immobile and united into a single unit. The 22nd bone is the mandible (lower jaw), which is the only moveable bone of the skull. Figure 1. Parts of the Skull.
Parts of the Skull. The skull consists of the rounded brain case that houses the brain and the facial bones that form the upper and lower jaws, nose, orbits, and other facial structures. Watch this video to view a rotating and exploded skull, with color-coded bones.
The skull consists of the rounded brain case that houses the brain and the facial bones that form the upper and lower jaws, nose, orbits, and other facial structures. Watch this video to view a rotating and exploded skull, with color-coded bones.
The anterior skull consists of the facial bones and provides the bony support for the eyes and structures of the face. This view of the skull is dominated by the openings of the orbits and the nasal cavity. Also seen are the upper and lower jaws, with their respective teeth (Figure 2).
Inside the nasal area of the skull, the nasal cavity is divided into halves by the nasal septum. The upper portion of the nasal septum is formed by the perpendicular plate of the ethmoid bone and the lower portion is the vomer bone.
The superior nasal concha is located just lateral to the perpendicular plate, in the upper nasal cavity.
Separating these areas is the bridge of bone called the zygomatic arch. The zygomatic arch is the bony arch on the side of skull that spans from the area of the cheek to just above the ear canal. It is formed by the junction of two bony processes: a short anterior component, the temporal process of the zygomatic bone (the cheekbone) and a longer posterior portion, the zygomatic process of the temporal bone, extending forward from the temporal bone. Thus the temporal process (anteriorly) and the zygomatic process (posteriorly) join together, like the two ends of a drawbridge, to form the zygomatic arch. One of the major muscles that pulls the mandible upward during biting and chewing arises from the zygomatic arch.
An evolutionarily ancient family of regulatory genes that directs the development of the overall body plan and the segmentation of body tissues. There are at least 20 families of homeobox genes. Sickle-cell anemia. A severe inherited hemoglobin disorder in which red blood cells collapse when deprived of oxygen.
The gluteus medius and gluteus minimus muscles originate on the dorsal side of the ilium and insert on the greater trochanter of the femur. Their actions are critical to propulsion and stability while walking. With the rotation of the ilium, the gluteal muscles in humans repositioned and thus act as pelvic abductors.
Mosaic evolution. A pattern of evolution in which the rate of evolution in one functional system varies from that in other systems. For example, in hominin evolution, the dental system, locomotor system, adn neurological system (especially the brain) all evolved at markedly different rates. Culture.
In 1938 Robert Broom from the Transvaal Museum in Pretoria, firstly described some hominin teeth found at the Kromdaai site. Attributed these remains to Paranthropus robustus. Other remains belonging to this species have been discovered in South Africa, with a timespan comprised between 2.3 and 1.2 mya.
The study of brain evolution through the analysis of brain endocasts to determine endocranial traits and volumes. Study the overall shape of the brain and identify the location of specific external features of brain anatomy, such as gyri and sulci location. Brain endocast.
Homo habilis still retain primitive features, such as a small body, limb proportion Australopithecus-like and a great sexual dimorphism.
The bones that make up the cranium are called the cranial bones . The remainder of the bones in the skull are the facial bones. Figure 6.7 and Figure 6.8 show all the bones of the skull, as they appear from the outside. In Figure 6.9, some of the bones of the hard palate forming the roof of the mouth are visible because the mandible is not present.
The styloid process is a thin, pen-like projection where muscles and ligaments of the neck are attached. The mastoid process is a wide and rough projection that serves as another attachment point for neck muscles. While all the bones of the skull, other than the mandible, are sutured to one another, the flat bones of the cranium are visibly sutured ...
What is commonly referred to as the “cheekbone” is really a the processes of two bones connected together: the zygomatic process of the temporal bone is sutured to the temporal process of the zygomatic bone to produce the zygomatic arch. There are three prominent bone markings on the temporal bones.
All the other bones in the skull are firmly attached to one another by sutures. Sutures are rigid immovable connections holding bones tightly to one another. Some of the sutures in the skull take a few months-to-years after birth to completely form. The brain is encased in the cranium of the skull. The bones that make up the cranium are called ...