Question

Differentiate between:

1. Myelinated and non-myelinated axons
2. Dendrites and axons
3. Thalamus and Hypothalamus
4. Cerebrum and Cerebellum

Answer 1

a. Myelinated and non-myelinated axons.

Myelinated Axons	Non-myelinated Axons
There is a myelin sheath.	There is no myelin sheath.
Compared to non-myelinated axons, impulse conduction is 50 times faster.	The impulse’s conduction moves slowly
Nerve impulses go from node to node.	Nerve impulse conduction is fluid.
There are Ranvier nodes.	There are no Ranvier nodes.

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b. Dendrites and axons

Dendrites	Axons
They are quick processes.	Axons are lengthy processes.
Dendrites direct impulses toward the neuron’s cell body.	mpulses are carried by axons outside the neuron’s cell body.
Dendrites are always branching.	Axons might or might not be branched.

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c. Thalamus and Hypothalamus

Thalamus	Hypothalamus
No hormones are secreted by the thalamus.	Specific hormones secreted by the brain regulate the pituitary gland’s activity.
It’s located above the midbrain.	It is located near the thalamic base.
It houses the nerve centers responsible for pain, heat, and cold sensations.	It has centers that regulate homeostasis, blood pressure, and body temperature.

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d. Cerebrum and Cerebellum

Cerebrum	Cerebellum
It is the greatest portion of the brain.	It is the brain’s second-largest region.
The forebrain contains it.	The hindbrain contains it.
There are two cerebral hemispheres in the brain.	The central vermis and the two lateral cerebellar hemispheres make up the cerebellum’s three lobes.
It is the location of intelligence and memory.	It is the location of posture and body equilibrium.