[LAB] Sheep's Brain, Cow's Eye, Cow's Heart Flashcards
What is the grey matter mainly made of?
nerve cell bodies
What are the “folds” of the cerebrum?
Gyrus
The two hemispheres of the brain is connected by what?
Corpus Callosum
What is the function of the hypothalamus?
hormone secretion, regulation of hunger, mood, thirst, fatigue, and temperature.
What part of the brain connects to the spinal cord?
medulla
The medulla has an important role in what kind of functions?
autonomic functions
What structure of the brain is responsible for the detection and discrimination of odors?
olfactory bulb
Where does the fibers from each optic nerve “criss-cross” to enable binocular vision?
optic chiasm
What connects the retina to the optic chiasm?
optic nerve
What are the nerves that continue from the optic chiasm to the thalamus, from which visual stimuli are routed to the visual cortex?
optic tract
What gland secretes melationin?
pineal gland
What is the connection between forebrain, cerebellum, and medulla?
pons
What is the membrane in the longitudinal midline of cerebrum that separates the left and right ventricles?
septum pellucidum
What are the furrows in the folds of the cerebrum?
sulci/sulcus
What portion of the midbrain coordinates movement of the eyes, head, and neck as a response to stimuli?
superior colliculus
What are the cavities in the brain? (hint: includes central canal of the spinal cord)
Ventricles
What portion of the CNS is mainly made of myelinated nerve fibers (axon)?
White matter
What is the toughest layer of meninges that covers and protects the brain?
Dura Matter
What is the layer of the meninges that is ultra-thin and spongy? (hint: appears to be ‘webby’)
arachnoid matter
What layer of the meninges is thin and adheres tightly to the surface of the brain, and dips into each sulcus?
(hint: pulling it away will reveal the depth of the sulcus)
pia matter
What line separates the two hemispheres of the cerebral cortex?
longitudinal fissure
What separates the frontal lobe from parietal lobe?
central sulcus
What separates the parietal and temporal lobe?
lateral sulcus
What is the “little brain”?
cerebellum
What fissure separates the cerebrum and cerebellum?
transverse fissure
What is the structure inferior to the optic chaisma?
pituitary gland
What is the structure inferior to the pituitary gland?
pons
What is white matter that looks like a tree also known as?
arbor vitae
What is the function of the sclera?
white layer that covers the outside of the eye. For protection
Where is the aqueous humor found?
anterior chamber of the eye (low viscosity)
Where is the vitreous humor found?
Posterior chamber of the eye (gel-like)
What is the function of the vitreous humor?
keeps eye shape
What is the function of the aqueous humor?
provides nourishment
What is the function of the cornea?
allows light to enter and helps focus the eye
What is the function of the pupil?
Opening in which light passes (i.e. lets light pass through)
What adjusts the size of the pupil to control the amount of light that enters the eye?
iris
What is the function of the eye’s lens?
absorbs, focuses, and directs incoming light from retina.
What structure is ring shaped and produces the aqueous humor?
ciliary body
What is the layer of photoreceptor cells and glial cells that is responsible for the perception of visuals?
retina
What is the spall pit in the retina that is responsible for resolution?
Fovea
What is the function of the ora serrata?
marks the transition from the simple, non-photosensitive area of the ciliary body to the complex, multi-layered, photosensitive region of the retina
At what side of the heart is the tricuspid valve?
right
At what side of the heart is the mitral valve?
left
The right ventricle pumps blood towards what artery?
pulmonary artery
What is the function of auricles?
“Ear”. Helps relieve atrial pressure
What is the shallow groove on the surface of the heart that separates the ventricles? (hint: contains important blood vessels)
Interventricular sulcus
Where is the semilunar valve located?
aorta
What is the main blood vessel that supports the heart muscle?
coronary artery