18/MHS06/013

1. Viscerocranium is formed by the bones supporting the face. The bones form the anterior and lower regions of the skull and include the mandible which attaches through only truly motile joint found in the skull.The facial skeleteon contains two nasal conchae, two nasal bones, two maxilla, the mandible, two palatine bones, two zygomatic bones and two lacrimal bones.
While the neurocranium is a protective shell surrounding the brain and stem. It forms the cranial cavity that surrounds and protects the brain and brainstem. The neurocramium is formed from the occipital bones, two temporal bones, two parietal bones, the sphenoid, ethmoid and frontal bones joined together with sutures.

2. The femoral triangle is a special area of the thigh  which appears as a triangular depression below the inguinal ligament when the thigh is flexed, abducted and laterally rotated. The femoral triangle is an area through which a number of vital structures pass through right under the skin, it also contains the femoral nerve and its terminal branches, femoral sheath and all its contents are located in the femoral triangle as well.

3. Muscles involved in locomotion:
Gluteus maximus- acts on the hip to decelerate the forward motion of the lower limb
Quadriceps femoris- keeps the leg extended at the knee and the thigh flexed at the hip
Gluteus minimus, gluteus medius and tensor fascia lata- abducts the lower limb.
Hamstring muscles- extends and flexes the leg.

4. The novel coronavirus that causes Covid-19 begins like most other respiratory viruses. The coronavirus is spread through droplets transmitted into the air from coughing or sneezing which people nearby can take in through their nose, mouth or eyes. The viral particles in these droplets travel quickly to the back of your nasal passages and to the mucuous membranes in the back of your throat, attaching to a particular receptor in cells, beginning there. This virus particles have spiked proteins sticking out from their surfaces that hook onto cell membranes, allowing the virus genetic materials to enter the human cell. That genetic material proceeds to hijack the metabolism of the cell where it multiplies and makes the virus. This virus multiplies and infects neighbouring cells until it destroys multiple cells in the upper respiratory system. When it has destroyed many cells in this region. it moves down to the lungs where it becomes inflamed, making it tough for one to breathe. This can lead to pneumonia (an infection of the alveoli) and can also lead to death.