Brain Anatomy Flashcards
What does the sagittal suture separate?
The parietal bones
The sagittal suture runs in the middle of the skull.
What bones are separated by the lambdoid suture?
Occipital bone from parietal and temporal bones
The lambdoid suture is located at the back of the skull.
What does the coronal suture separate?
Frontal bone from parietal bones
The coronal suture runs across the top of the skull.
What does the squamous suture separate?
The squamous suture is located on the side of the skull.
How many layers do the meninges have?
3 layers
The meninges cover the surface of the brain and spinal cord.
What are the names of the three layers of the meninges?
- Dura mater
- Arachnoid mater
- Pia mater
The dura mater is the outermost layer; the pia mater is the innermost layer.
What is the function of a neuron?
To transmit nerve impulses
Neurons consist of a cell body, axon, and dendrites.
What are axon bundles referred to as?
Nerves
Axons bundle together to form nerves.
Where is grey matter primarily found?
- Thalamus
- Hypothalamus
- Basal ganglia
- Brainstem
Grey matter contains neuronal cell bodies.
What is white matter composed of?
Myelin
White matter appears white due to high lipid content in myelin.
What are the three parts of the brainstem?
- Midbrain
- Pons
- Medulla oblongata
The brainstem connects the brain to the spinal cord.
What is located between the pons and cerebrum?
Midbrain
The midbrain contains nuclei and nerve fibers.
What is the role of the pons?
Connects midbrain to medulla oblongata
The pons contains nerve fibers.
What does the medulla oblongata extend from?
Pons to spinal cord
The medulla oblongata regulates vital functions.
What are the names of the sinuses mentioned?
- Frontal sinus
- Ethmoid sinus
- Maxillary sinus
- Sphenoid sinus
These sinuses are air-filled spaces in the skull.
