Fundamentals of the nervous system and nervous tissue
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| What are the three basic functions of the nervous system? | show 🗑
|
||||
| show | Gathered information from the nervous systems millions of sensory receptors that monitor changes occurring both inside and outside the body
🗑
|
||||
| show | A process of the nervous system that interprets sensory input and decides what should be done at each moment
🗑
|
||||
| Motor Output | show 🗑
|
||||
| show | -consists of the brain and spinal cord that occupies the dorsal cavity -is the integrating and command center of the nervous system -interprets sensory input and dictates motor responses based on reflexes, current conditions, and past experiences
🗑
|
||||
| show | -consists mainly of the nerves (budles of axons) that extend from the brain and spinal cord -spinal nerves carry impulses to and from the spinal cord, and cranial nerves carry impulses to and from the brain 2 subdivisions: Sensory and Motor
🗑
|
||||
| show | PNS subdivison: -consists of nerve fibers (axons) that convey impulses to the CNS from sensory receptors located throughout the body -Somatic (limbs and skin) and Visceral (ventral body cavity) sensory nerve fibers -keeps CNS constantly informed
🗑
|
||||
| show | PNS subdivision: - transmits impulses from the CNS to effector organs -impulses activate muscles to contract and glands to secrete - 2 parts: Somatic and Autonomic Nervouse Systems
🗑
|
||||
| Somatic Nervous System | show 🗑
|
||||
| show | Visceral motor(Involuntary) -consists of visceral motor nerve fibers that regulate the activity of smooth muscles, cardiac muscles, and glands -2 subdivisions: sympathetic and parasympathetic
🗑
|
||||
| ANS subdivisions | show 🗑
|
||||
| show | neurons that associate closely with much smaller cells 6 types, 4 in the CNS and 2 in the PNS
🗑
|
||||
| Astrocytes | show 🗑
|
||||
| Microglia | show 🗑
|
||||
| show | Neuroglia
CNS
-form a permeable barrier between cerebrospinal fluid that fills those cavities and the tissue fluid bathing the cells in CNS
-beating of their cilia helps circulate the CSF that cushions the brain and spinal cord
🗑
|
||||
| show | Neuroglia
CNS
-line up along thicker neuron fibers in CNS
-wrap their processes tightly around the fibers, producing insulationg covers called myelin sheaths
🗑
|
||||
| satellite cells | show 🗑
|
||||
| show | PNS
surround and form myelin sheaths, vital to regeneration of damaged peripheral fibers, functions are similar to oligodendrocytes
🗑
|
||||
| show | -3 or more processes- one axon and the rest dendrites
-most abundant in body, major neuron type in CNS
-receptive region (recieves stimulus) Plasma membrane exhibits chemically gated ion channels
🗑
|
||||
| show | 2 processes-axon & dendrite- that extend from opp. sides of the cell body
1 is a fused dendrite,other is an axon
Rare-found in some special sensory organs
Conducting region (generates/transmits AP).
🗑
|
||||
| show | one single short process extends from the cell body and divides T-like into proximal and distal branches and forms central and peripheral processes -found in PNS, in dorsal root ganglia of spinal cord- secretory region
🗑
|
||||
| show | bundles of intermediate filaments
🗑
|
||||
| neuron | show 🗑
|
||||
| nerve | show 🗑
|
||||
| tract | show 🗑
|
||||
| show | collection of cell bodies in the CNS
🗑
|
||||
| Ganglion | show 🗑
|
||||
| Depolarization | show 🗑
|
||||
| hyperpolarization | show 🗑
|
||||
| show | resulting graded potential when the receptor of a sensory neuron is excited by some form of energy
🗑
|
||||
| show | resulting graded potential, when the stimulus is a neurotransmitter released by another neuron. it is called this bc the neurotransmitter is released into a fluid-filled gap called a synapse and influences the neuron post the synapse
🗑
|
||||
| show | Excitatory Postsynaptic Potential can add together, or summate, to influence the activity of postsynaptic neuron
🗑
|
||||
| show | 2 excitatory stimuli close in time cause EPSPs that add together
🗑
|
||||
| spatial summation | show 🗑
|
||||
| neurotransmitter | show 🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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
Created by:
TWilcom139
Popular Anatomy sets