Morphology of Humans Flashcards
Anterior
toward the front (also ventral in biped)
Posterior
toward the back (also dorsal in biped)
Medial
toward the midline
Lateral
toward the side
Superior
above another object in relative position
Inferior
below another object in relative position
Proximal
toward the joint w/the torso
Distal
away from the joint w/the torso
Superficial
on or close to the surface
Deep
located in the body away from the surface
Sagittal
vertical plane through the body
Midsagittal
a vertical plane through the midline of the body
Frontal (Coronal)
a plane that divides anterior from posterior
Horizontal (Transverse)
a plane that divides superior from inferior
Epithelial Tissues
coverings
Muscle Tissues
contractions to perform work
Connective Tissues
provide support and circulation
Nervous Tissues
provide electrical signals to control body functions
Neural Control
fast and electrical
Hormonal Control
slow and chemical
stratum germinativum
germ layer
stratum corneum
outermost dead layer
keratin
protein in hair
Hair (4)
root, shaft, sebaceous glands, arrector pili muscle
Nails (3)
Nair root, lanula, nail body
Papillary layer (4)
Part of dermis. Just beneath germinativum, Fingerprints, connection between the epidermis and dermis isn’t as strong in newborns and elderly.
Reticular layer (3)
Part of the dermis, woven collagen. Doesn’t stretch.
Autoregulation (2)
localized control, chemical
Meninges (3)
dura mater, arachnoid mater, pia mater
dura mater (2)
tough outer layer
arachnoid mater (3)
looks like spider web, filled with fluid. Cerebrospinal fluid is in between arachnoid and dura mater
Pia mater (1)
fragile
Cerebrum (4)
5 lobes, left and right hemispheres, 80% of brain mass, highly folded to increase surface area for gray matter.
Diencephalon (3)
epithalamus, thalamus, hypothalamus
Midbrain (2)
cerebral peduncles and corpora quadigemina
Corpus callosum
connects left and right hemispheres
Enlargements (spinal cord)
thicken regions of spinal cord where peripheral nerves connect
Conus medullaris
tip of spinal cord between L1 and L2
Cauda equina
“horses tail”, spinal nerves
schwann cells (3)
neuroglia, PNS myelin, allow nerve damage to heal
Oligodendrocytes (3)
neuroglia, CNS myelin, no healing
Astrocytes (3)
neuroglia, modify environment, blood-brain barrier
Microglia (3)
neuroglia, immunity, fight infection
Reflex arc
a simple neural circuit
Functions of integument (4)
barrier, temp regulation, injury repair, milk production