Brain Development
What is the function of White Matter
White matter is predominately myelinated axons, which transmit information (action potentials)
How many major regions are contained within the diencephalon?
Consists of three paired gray-matter structures:
–Thalamus
–Hypothalamus
–Epithalamus
The Action of a Muscle can be Inferred by the Position of the Muscle Relative to the Joint it Crosses. Explain?
-muscle crosses on the interior side of a joint produces flexion
-muscle crosses on the posterior side of a joint produces extension
-muscle crosses on the lateral side of a joint produces abduction
-muscle crosses on the medial side of a joint produces adduction
What is the function of nervous system?
master controlling and communicating system of the body
Which structure connects the right and left cerebral hemispheres?
Corpus callosum
Which ventricles are divided by the septum pellucidum?
The right and left lateral ventricles are separated on midline by the septum pellucidum
What is thalamus?
The thalamus is the central region of the diencephalon and forms the central core of the brain. The thalamus is enclosed by the cerebrum.
What are the most common patterns of Fascicle Arrangements?
–Circular
–Convergent
–Parallel
–Pennate
What is the function of the peripheral nervous system?
communication lines that link all parts of the body to the brain and/or spinal cord
Which area form the central core of the brain?
Thalamus
What type of tissue makes up the cerebral cortex?
The cerebral cortex is composed of gray matter. Gray matter is primarily neuron cell bodies
Which region acts as a relay center for sensory messages ascending to the cerebrum
The thalamus acts as a filter, sending the most important sensory messages on to the correct location in the cerebrum.
What are the three forms of Pennate?
-Unipennate
-Bipennate
-Multipennate
What are the functional divisions of the PNS?
sensory and motor
Where is the arbor vitae located?
cerebellum
Neural tube’s anterior end expands, and constrictions form three primary vesicles. What are they?
–Prosen cephalon, or forebrain
–Mesen cephalon, or midbrain
–Rhomben cephalon, or hindbrain
Which part of the diencephalon is connected to the pituitary gland?
The hypothalamus is connected to the pituitary gland by the infundibulum.
What is the definition of Unipennate?
fascicles attach only to one side of tendon (example: extensor digitorum longus)
What is the function of the somatic sensory fibers?
convey impulses from the skin, skeletal muscles, and joints
Which region of the brains is necessary for consciousness?
Cerebrum
Several sulci divide each hemisphere into five lobes. What are they?
–Frontal
–Parietal
–Temporal
–Occipital
–Insula
Which ventricle is located within the brain stem?
The fourth ventricle is located anterior to the cerebellum. It is continuous with the third ventricle through the cerebral aqueduct at its superior border and continuous with the central canal at its inferior border.
What is the definition of Bipennate?
fascicles insert from opposite sides of tendon (example: rectus femoris)
What is the function of the visceral sensory fibers ?
transmit impulses from the visceral organs (organs withing the ventral body cavity)
What is the function of the Hypothalamus ?
controls the autonomic nervous system and regulates hunger and thirst sensations