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Anatomy quiz 1 (MDA 1-70)
Basic terms and ideas
39
Anatomy
Graduate
09/01/2012

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Term
Muscular septa
Definition
Fascia that surrounds fascial compartments; contains muscles typically sharing function and vascular supply/innervation
Term
retinaculum (of joint)
Definition
A layer of thick fascia that surrounds tendons at points they cross joints, preventing "bowstringing" (sliding across joint instead of transmitting force)
Term
bursa
Definition
closed, usually thin sacs of serous membrane. Examples include subtendinous bursae, synovial tendon sheaths. Serous membranes of ventral body cavity are histologically identical but not usually named as bursa.
Term
cubital
Definition
referring to elbow
Term
hallux
Definition
big toe
Term
inguinal
Definition
referring to crease between thigh and trunk
Term
olecranon
Definition
point of elbow
Term
popliteus
Definition
region posterior to knee joint
Term
sura
Definition
region of the posterior leg (knee to ankle)
Term
perineum
Definition
region between the pubic symphysis and the coccyx.
Term
reflexive contraction
Definition
Automatic contraction of a SKELETAL muscle; motor impulse generated in spinal column
Term
Tonic contraction
Definition
Constant, baseline contraction of a conscious individual's (skeletal) muscles
Term
isotonic contraction
Definition
a type of phasic contraction in which the muscle changes length during contraction
Term
isometric conraction
Definition
Muscle is more tense than during tonic contraction, but not changing length.
Term
eccentric /concentric contraction
Definition
differentiates whether muscle is exerting force in the same direction or opposite direction of the extremities movement vector
Term
prime mover
Definition
agonist of a motion; concentric contractor which expends the most work
Term
antagonist
Definition
eccentric contracter during joint movement
Term
fixator
Definition
steadies proximal portion of a limb during distal contraction. During the contraction of the distal primary movers, the fixators contract isometrically
Term
tunica adventita
Definition
outer layer of the blood vessel - connective tissue
Term
tunica media
Definition
smooth muscle - blood vessel layer. Most variable layer, can have elastic fibers in arteries.
Term
tunica intima
Definition
endothelium
Term
anastomoses
Definition
communications between multiple branches of an artery
etymology: to provide a mouth - "stoma"
Term
  • collateral circulation
Definition
blood flows through a minor artery instead of through the  more major artery with which it has ananastamosis.
Term
venous plexuses
Definition
an interlacing network of small veins
Term
accompanying veins
Definition
the 2 or several veins inside a vascular sheath (fascia) with a single artery. Arranged to facilitate counter-current heat exchange and arteriovenous pumping.
Term
arteriolovenular anastamosis
Definition
venous shunts - allows arterial blood to bypass capillary beds and returning directly to heart via venous system
Term
right lymphatic duct
Definition
empties lymph from right upper quadrant into the right subclavian at the right venous angle (junction of internal jugular and subclavical)
Term
thoracic duct
Definition
A duct from the merger of many lymphatic trunks that drains into the left venous angle (subclavian and internal jugular intersection).
Term
pseudounipolar nerve cell
Definition
Cell bodies "hang off" the colinear axon and dendrite, which convey information directly from the extremities to the CNS. Cell bodies are found in sensory ganglia.
Term
anterior nerve ROOT
Definition
Motor fibers (efferent)
Term
posterior nerve roots
Definition
sensory fibers (afferent)
Term
posterior ramus
Definition
A mixed nerve splitting posteriorly off the junction of the anterior and posterior spinal nerve roots. Innervates the synovial joints of the spinal column, the deep intrinsic back muscles, and the overlying skin.
Term
visceral sensory fibers
Definition
conveys sensory (pain or subconscious) information from hollow organs and blood vessels to the CNS.
Term
general visceral efferent fibers
Definition
transmits contraction-modulating signal from CNS to smooth muscle fibers
Term
Divisions of the nervous system which convey information between extremities and CNS without interruption of a synpase
Definition
All sensory fibers and general somatic efferent (motor)
Term
the divisions of the nervous system in which information must cross a synapse (eg pre- and post-synaptic nerves are both used) between spinal column and extremity
Definition
Both sympathetic and parasympathetic ANS have pre- and post- synaptic neurons.
Term
acetylcholine
Definition
transmitter used by parasympathetic nervous system
Term
norepinephrine
Definition
transmitter used by sympathetic nervous system.
Term
communicating branches of anterior ramus
Definition
The tract sympathetic neurons follow almost immediately after entering the anterior ramus to reach the appropriate sympathetic ganglion (para- or pre-vertebral)
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