Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Dev of Brain
Chapter 13 - A & P Lecture
| Question | Answer |
|---|---|
| what is the brain? | most complex organ of the CNS |
| where is the brain housed? | cranial cavity |
| what is the function of the brain? | control center for all bodily activty (conscious + unconscious) |
| 4 major divisons of the brain: | brainstem, cerebellum, diencephalon, cerebrum |
| what is the brainstem? | controls vital life functions (breathing, heart rate) |
| what is the cerebellum? | coordinates movement and balance |
| what is the diencephalon? | processes sensory information and regulates homeostasis |
| what is the cerebrum? | responsible for higher cognition (thinking, memory, decision-making) |
| List the steps of Neurualation (forming Neural Tube): | 1. Neural Plate Formation 2. Neural Folds and Neural Groove 3. Neural Crest Cell Migration 4. Neural Tube Formation |
| describe Neural Plate Formation: | - A flat sheet of ectodermal tissue forms on embryo’s dorsal surface (called the neural plate) 👉 Beneath it lies the notochord, a rod-like structure that: * Establishes embryo’s central axis * Contributes to intervertebral discs |
| describe Neural Folds and Neural Groove: | - The edges of the neural plate elevate, forming neural folds. - The center dips inward → forming the neural groove. 👉 At the top of each fold is the Neural crest |
| describe Neural Crest Cell Migration: | - Cells from neural crest detach + migrate throughout the body - These cells are incredibly important—they form: Sensory neurons Autonomic neurons Enteric neurons Pigmented cells Adrenal medulla Facial bones Dentin of teeth |
| describe Neural Tube Formation: | - The neural folds fuse at the midline, forming the neural tube - Cephalic (head) portion → becomes the brain - Caudal (tail) portion → becomes the spinal cord 👉 This tube is the direct precursor of the entire CNS. |
| Once the neural tube forms, it doesn’t stay uniform: | it develops regions (pouches) |
| 3 primary regions that the neural tube forms: | Forebrain, Midbrain, Hindbrain |
| describe Forebrain: | Divides Into: - Telencephalon → becomes the cerebrum - Diencephalon |
| describe Midbrain: | - Remains as a single structure - Becomes the adult midbrain |
| describe Hindbrain: | - Metencephalon → becomes: Pons & Cerebellum - Myelencephalon → becomes: Medulla oblongata |
Created by:
academicweapon.com