BIOPSYCH TERMS.pdf - WEEK 2 ● the central nervous system(CNS is the division of the nervous system that is located within the skull and spine ●

BIOPSYCH TERMS.pdf - WEEK 2 ● the central nervous...

This preview shows page 1 - 2 out of 4 pages.

WEEK 2 the central nervous system (CNS) is the division of the nervous system that is located within the skull and spine afferent nerves that carry sensory signals from the skin, skeletal muscles, joints, eyes, ears, and so on, to the central nervous system, efferent nerves that carry motor signals from the central nervous system to the skeletal muscles sympathetic nerves are those autonomic motor nerves that project from the CNS in the lumbar(small of the back) and thoracic(chest area) regions of the spinal cord.ENERGIZE The parasympathetic nerves are those autonomic motor nerves that project from the brain and sacral (lower back) region of the spinal cord. CONSERVE the cerebral ventricles are the four large internal chambers of the brain: the two lateral ventricles, the third ventricle, and the fourth ventricle (see Figure 3.3). In the brain, however, the cells of the blood vessel walls are tightly packed, thus forming a barrier to the passage of many molecules particularly proteins and other large molecules Nerves that carry signals away from a structure, such as the CNS, are efferent nerves Sympathetic nerves stimulate, organize, and mobilize energy resources in threatening situations. The blood brain barrier blocks the entry of many large molecules into brain tissue from the circulatory system. Gray matter is composed largely of cell bodies and unmyelinated interneurons, whereas white matter is composed largely of myelinated axons. dorsal means toward the surface of the back or the top of the head (the dorsal surface), ventral means toward the surface of the chest or the bottom of the head Dorsal root sensory Ventral root motor the various nuclei of the reticular formation are involved in a variety of functions including sleep, attention, movement, the maintenance of muscle tone, and various cardiac, circulatory, and respiratory reflexes. reticular formation cerebellum- sensorimotor; thalamus- sensory relay, hypothalamus- hormones limbic system- motivated behavior The fornix in the brain is a fibrous, arching band connecting the two lobes of the cerebrum. Gene knockout techniques are procedures for creating organisms that lack a particular gene under investigation WEEK 3 Although dopamine levels are low in Parkinson’s disease, dopamine is not an effective treatment because it does not readily penetrate the blood brain barrier.
Image of page 1
Image of page 2

You've reached the end of your free preview.

Want to read all 4 pages?

  • Fall '08
  • Staff

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask ( soon) You can ask (will expire )
Answers in as fast as 15 minutes
A+ icon
Ask Expert Tutors