Human Skull Anatomy Quiz

Questions and Answers

What forms the forehead in the human skull?

Frontal Bone

What is the smooth area between the eyebrows called?

Glabella

What is the pear-shaped opening at the base of the nose known as?

Periform Aperture

Which bony structure is scroll-shaped in the nasal cavity?

Inferior Nasal Concha Signup and view all the answers

What projection of the maxilla contributes to the cheekbone?

Zygomatic Process of Maxilla Signup and view all the answers

What is the main part of the lower jawbone called?

Body of Mandible Signup and view all the answers

What is the bony ridge above the eye socket known as?

Supraorbital Notch Signup and view all the answers

What type of cells protect and insulate an axon?

Schwann cells Signup and view all the answers

What is the junction called where nerve impulses are transmitted?

Synapse Signup and view all the answers

Which of the following are components of a neuron? (Select all that apply)

Golgi apparatus Signup and view all the answers

Study Notes

Human Skull Anatomy

Frontal Bone: Forms the forehead, providing structure and protection for the brain.
Glabella: Smooth region between eyebrows, significant for facial aesthetics.
Nasion: Anatomical landmark where frontal bone meets nasal bones, important for anthropometric measurements.
Periform Aperture: Pear-shaped opening at the nose base, crucial for the nasal structure.
Inferior Nasal Concha: Scroll-like bone in the nasal cavity, plays a role in airflow and filtration.
Zygomatic Process of Maxilla: Projection that helps form the cheekbone, contributing to facial harmony.
Remus of Maxilla: Curved portion of the maxilla, important for dental arch support.
Body of Mandible: Main part of the lower jaw, essential for mastication and smile aesthetics.
Mental Foramen: Opening in mandible allowing the passage of nerves and blood vessels, affecting sensation in the chin.
Angle of Mandible: Junction of the body and ramus, significant for jaw movement and strength.
Supraorbital Notch: Depression above the eye socket, facilitates the passage of blood vessels and nerves.
Zygomatic Process of Frontal Bone: Extension from the frontal bone to articulate with the zygomatic bone, essential for facial structure.
Nasal Bone: Small bone forming the nose bridge, crucial for overall facial symmetry.
Frontal Process of Maxilla: Projection that articulates with frontal bone, supporting the upper facial structure.
Zygoma: The cheekbone, important for facial aesthetics and protection of underlying structures.
Infraorbital Foramen: Opening below the eye socket allowing the passage of the infraorbital nerve, affecting sensation in the face.
Nasal Crest: Ridge on the frontal bone that contributes to the shape of the nose.
Oblique Line: An anatomical landmark on the maxilla, relevant in dental and surgical procedures.
Anterior Nasal Spine: Maxillary projection, plays a role in the shape of the nasal structure and facial alignment.
Supraorbital Arch: Bony ridge above the eye socket, significant for muscular attachment and protection.

Neuron Structure

Dendrite: Branched extensions receiving signals, composed of neurofibrils, cell membrane, lysosomes, Golgi apparatus, neuroplasm, and a nucleus.
Cyton/Soma: Cell body containing organelles like SER (smooth endoplasmic reticulum), RER (rough endoplasmic reticulum), Nissl granules, neurofibrils, microtubules, and mitochondria; responsible for cell maintenance and function.
Myelin Sheath: Insulating layer surrounding axons, crucial for speeding up signal transmission.
Axon: Long projection transmitting impulses, associated with Schwann cells that form the myelin sheath; features nodes of Ranvier for rapid signal propagation.
Synapse: Junction where nerve impulses pass between neurons or from neurons to other cell types, essential for communication in the nervous system.