Podcast
Questions and Answers
What term describes the direction toward the head in anatomical terms?
What term describes the direction toward the head in anatomical terms?
Which directional term refers to a position located toward the tail?
Which directional term refers to a position located toward the tail?
What is the process called that marks the beginning of the formation of the central nervous system?
What is the process called that marks the beginning of the formation of the central nervous system?
How is a sagittal section defined in terms of orientation?
How is a sagittal section defined in terms of orientation?
Signup and view all the answers
Which of the following best describes the initial shape of the central nervous system during development?
Which of the following best describes the initial shape of the central nervous system during development?
Signup and view all the answers
Which term refers to a section of the nervous system that is perpendicular to the ground and divides the brain into two symmetrical halves?
Which term refers to a section of the nervous system that is perpendicular to the ground and divides the brain into two symmetrical halves?
Signup and view all the answers
What anatomical direction describes the position toward the back of the body?
What anatomical direction describes the position toward the back of the body?
Signup and view all the answers
During what stage of embryonic development does neurulation take place?
During what stage of embryonic development does neurulation take place?
Signup and view all the answers
Which of the following statements accurately describes the initial formation of the central nervous system?
Which of the following statements accurately describes the initial formation of the central nervous system?
Signup and view all the answers
What is the term used to describe the imaginary line through the center of the CNS?
What is the term used to describe the imaginary line through the center of the CNS?
Signup and view all the answers
Which slicing method divides the brain into upper and lower parts?
Which slicing method divides the brain into upper and lower parts?
Signup and view all the answers
What structure ultimately contributes to the formation of the peripheral nervous system from the neural crest cells?
What structure ultimately contributes to the formation of the peripheral nervous system from the neural crest cells?
Signup and view all the answers
Which directional term is not synonymous with the term 'anterior'?
Which directional term is not synonymous with the term 'anterior'?
Signup and view all the answers
Which of the following does NOT describe how the central nervous system maintains its shape after development?
Which of the following does NOT describe how the central nervous system maintains its shape after development?
Signup and view all the answers
What does the term 'ventral' refer to in anatomical direction?
What does the term 'ventral' refer to in anatomical direction?
Signup and view all the answers
Study Notes
Nervous System Structure
- The nervous system has a central imaginary line (neuraxis) running from the spinal cord to the brain.
- Anterior/rostral: Toward the head
- Posterior/caudal: Toward the tail
- Dorsal: Toward the back
- Ventral: Toward the belly
Nervous System Slicing
- Cross/frontal sections: Sliced transversely, like salami
- Horizontal sections: Parallel to the ground
- Sagittal sections: Perpendicular to the ground, parallel to the neuraxis, dividing the brain into symmetrical halves
Anatomical Directions
- Superior: Above
- Inferior: Below
- Lateral: Away from the middle of the body, toward the side
- Medial: Toward the middle of the body, away from the side
- Ipsilateral: Same side of the body
- Contralateral: Opposite side of the body
Neurulation
- Occurs during the third week of embryonic development.
- Neural plate of thickened cells transforms into a neural tube (beginning of central nervous system).
- The edges of the plate elevate and fuse, forming the neural tube.
- Neural crest cells form the peripheral nervous system.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Explore the structure and anatomical directions of the nervous system in this comprehensive quiz. Learn about terms like anterior, posterior, and various slicing techniques. Test your knowledge on the basic principles of neurulation and the nervous system's orientation.
