Popular guidelines / 12/04/2021

What carries impulses between the periphery and CNS?

The central nervous system consists of the brain and spinal cord. Cranial nerves, spinal nerves, and ganglia make up the peripheral nervous system. The afferent division of the peripheral nervous system carries impulses to the CNS; the efferent division carries impulses away from the CNS.

What is a bundle of fibers that provides for communication between different parts of the CNS?

The brain contains two hemispheres, the left and the right, connected by a bundle of nerve fibers called the corpus callosum.

What is the fiber tract involved with olfaction?

The olfactory tract is a bilateral bundle of afferent nerve fibers from the mitral and tufted cells of the olfactory bulb that connects to several target regions in the brain, including the piriform cortex, amygdala, and entorhinal cortex.

Which of the following provides for communication between gyri in the same hemispheres?

A fiber tract that provides for communication between different parts of the same cerebral hemisphere is call a(n) association tract, whereas one that carries impulses from the cerebrum to lower CNS areas is called a(n) projection tract.

Which neurons carry information to the CNS?

There are three types of neurons in the nervous system – afferent, efferent and interneurons. Afferent neurons carry signals towards the CNS – afferent means “towards”. They provide information about the external environment and the regulatory functions being carried out by the nervous system.

What carries impulses to the cell body?

Dendrites are extensions, or processes, of the cytoplasm that carry impulses to the cell body. An extension or process called an axon carries impulses away from the cell body. Nervous tissue also includes cells that do not transmit impulses, but instead support the activities of the neurons.

What parts of the brain are white matter?

White matter is a vast, intertwining system of neural connections that join all four lobes of the brain (frontal, temporal, parietal, and occipital), and the brain’s emotion center in the limbic system, into the complex brain maps being worked out by neuroscientists.

What is name for inner nervous tissue layer?

The pia mater is the innermost layer of meninges. This thin, delicate membrane is tightly bound to the surface of the brain and spinal cord and cannot be dissected away without damaging the surface.

What is the central sulcus?

The central sulcus separates the frontal lobe from the parietal lobe, and more specifically separates the primary motor cortex anteriorly from the primary somatosensory cortex posteriorly 1.

Why trauma to the base of the brain is often much more dangerous?

THE BASE OF THE BRAIN IS MORE DANGEROUS THEN TRAUMA TO FRONTAL LOBES BECAUSE IT CONTAINS THE CENTERS MORE VITAL TO LIFE SUCH AS, RESPIRATORY, CARDIAC, AND VASOMOTOR CENTERS. IN “SPLIT BRAIN” EXPERIMENTS, THE MAIN COMMISSURE CONNECTING THE CEREBRAL HEMISPHERES IS CUT.

What is the most important autonomic center of brain?

The hypothalamus is the key brain site for central control of the autonomic nervous system, and the paraventricular nucleus is the key hypothalamic site for this control. The major pathway from the hypothalamus for autonomic control is the dorsal longitudinal fasciculus.

How are involuntary impulses carried in the nervous system?

INVOLUNTARY impulses to skeletal muscle would be carried by ___motor neurons. Neurons that monitor stretch and chemical changes in the stomach & intestine belong to the ___ nervous system. Supporting cells of the nervous system are called ____.

Is the CNS part of the nervous system?

If nervous tissue is not part of the CNS, it must belong to the _____ nervous system. Motor neurons of the ____ division of the nervous system conduct voluntary impulses to skeletal muscle only. (Make your answer very specific) Sensory neurons can also be called ____ neurons.

What are processes of neuron that conduct impulses away from the cell body?

Processes of a neuron that conduct impulses away from the cell body are the ____. The cytopolasm inside an axon can be called ____; the plasma membrane surrounding it can be called ____.

What kind of neurons carry impulses to SM?

A B Motor neurons of the ____ division of th Somatic Sensory neurons can also be called ____ Afferent Motor neurons can also be called ____ ne Efferent _____ motor neurons carry impulses to sm Autonomic

What makes up the peripheral nervous system ( CNS )?

The peripheral nervous system is made up of thick bundles of axons, called nerves, carrying messages back and forth between the CNS and the muscles, organs, and senses in the periphery of the body (i.e., everything outside the CNS).

Processes of a neuron that conduct impulses away from the cell body are the ____. The cytopolasm inside an axon can be called ____; the plasma membrane surrounding it can be called ____.