Podcast
Questions and Answers
What is the term used to describe the folds on the surface of each hemisphere?
What is the term used to describe the folds on the surface of each hemisphere?
- Gyri (correct)
- Sulci
- Cortex
- Hemisphere
What is the purpose of the gyri on the surface of each hemisphere?
What is the purpose of the gyri on the surface of each hemisphere?
- To reduce the surface area of the cortex
- To separate the two hemispheres
- To connect the two hemispheres
- To increase the surface area of the cortex (correct)
What is the term used to describe the grooves between the gyri on the surface of each hemisphere?
What is the term used to describe the grooves between the gyri on the surface of each hemisphere?
- Cortex
- Gyri
- Hemisphere
- Sulci (correct)
What is the effect of the gyri on the surface area of the cortex?
What is the effect of the gyri on the surface area of the cortex?
What are the two main features on the surface of each hemisphere?
What are the two main features on the surface of each hemisphere?
What is the main function of the cerebellum?
What is the main function of the cerebellum?
What is another name for the cerebellum?
What is another name for the cerebellum?
What blood vessels feed into the cerebral arterial circle of Willis?
What blood vessels feed into the cerebral arterial circle of Willis?
What is the primary role of the cerebral arterial circle of Willis?
What is the primary role of the cerebral arterial circle of Willis?
What is the location of the cerebral arterial circle of Willis?
What is the location of the cerebral arterial circle of Willis?
Which of the following is a primary component of gray matter?
Which of the following is a primary component of gray matter?
What is the primary function of the neuroglia in white matter?
What is the primary function of the neuroglia in white matter?
Which of the following is NOT a component of white matter?
Which of the following is NOT a component of white matter?
What is the main difference between gray matter and white matter?
What is the main difference between gray matter and white matter?
Which of the following is a characteristic of both gray matter and white matter?
Which of the following is a characteristic of both gray matter and white matter?
Which of the following is NOT a main part of the brainstem?
Which of the following is NOT a main part of the brainstem?
Which of the following functions is NOT controlled by the brainstem?
Which of the following functions is NOT controlled by the brainstem?
What is the elongated, cylindrical part of the central nervous system below the head?
What is the elongated, cylindrical part of the central nervous system below the head?
Which of the following is NOT a function controlled by neurons in the brainstem?
Which of the following is NOT a function controlled by neurons in the brainstem?
Which of the following is a major difference between the brainstem and the spinal cord?
Which of the following is a major difference between the brainstem and the spinal cord?
How many spinal nerves originate from the thoracic region of the spinal cord?
How many spinal nerves originate from the thoracic region of the spinal cord?
Which of the following is NOT a component of the peripheral nervous system?
Which of the following is NOT a component of the peripheral nervous system?
Which region of the spinal cord has the fewest spinal nerves?
Which region of the spinal cord has the fewest spinal nerves?
What is the total number of spinal nerves in the human body?
What is the total number of spinal nerves in the human body?
Which of the following statements is TRUE about the spinal cord?
Which of the following statements is TRUE about the spinal cord?
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Study Notes
Central Nervous System (CNS)
- Grey matter consists of nerve cell bodies embedded in neuroglia
- White matter consists of nerve processes (axons) and blood vessels embedded in neuroglia
- The surface of each hemisphere features numerous folds called gyri, which increase the surface area of the cortex, and intervening grooves called sulci
- Four blood vessels feed into the cerebral arterial circle of Willis
Cerebellum
- Also known as the "little brain", the cerebellum coordinates and smooths out voluntary movements
- Divided into three main parts: midbrain, pons, and medulla oblongata
- Contains neurons responsible for vital functions, including:
- Blood pressure and heart rate regulation
- Breathing
- Sleeping
- Consciousness
Spinal Cord
- Elongated, cylindrical part of the central nervous system below the head
- Contains the roots of 31 spinal nerves, including:
- 8 cervical nerves
- 12 thoracic nerves
- 5 lumbar nerves
- 5 sacral nerves
- 1 coccygeal nerve
Peripheral Nervous System (PNS)
- Consists of cranial and spinal nerves and their associated ganglia
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