Anatomy & Physiology II With Lab (Chamberlain University)
, Exam 2 Study Guide
1.) Know general features of the brain.
Gyrus: An elevated ridge on the surface of
the cerebrum
Sulci: Depressions in between gyri
2.) What tracts are carrying descending (motor) and ascending (sensory)
info?
ASCENDING TRACTS:
A.) Lateral Spinothalamic- pain and temp
B.) Anterior Spinothalamic- crude touch and pressure
C.) Dorsal Column-Medial Lemniscal Pathway (Fasciculi gracilis
and cuneatus)- discriminative touch and vibration
D.) Anterior and Posterior Spinocerebellar- Unconscious
kinestesia
E.) Spinotectal- touch related to visual reflexes
DESCENDING TRACTS:
A.) Corticospinal tracts- Carry motor information from brain to
spine.
B.) Lateral corticospinal- Voluntary movements
C.) Anterior corticospinal- Ipsilateral voluntary movements
D.) Reticulospinal- Maintain posture
E.) Rubrospinal- Coordinate body movements and posture
F.) Tectospinal- Head and neck movement in response to visual
reflexes
G.) Vestibulospinal- Coordinate posture and balance
3.) Know location of ventricles
Lateral ventricle (x2) (In the cerebral hemispheres)
Third ventricle- The third ventricle is located between the right and left
thalamus, and part of the hypothalamus
Fourth ventricle- Center of the posterior fossa
4.) Know layers of meninges.
Dura mater- directly beneath the skull and vertebral column
Arachnoid mater- between dura mater (outermost) and pia mater
(inner most)
Pia mater- the innermost layer of the three membranes, or meninges
5.) Know functions of cranial nerves.
CN 1 Olfactory- Smell Sensory
CN 2 Optic- Sight Sensory
CN 3 Oculomotor- Eye Movement Motor