anatomy quiz questions
Nerves that directly control the motility of the stomach or rate of the heartbeat would belong to the:
autonomic motor division
Which structure is known as AV valve with two flaps?
bicuspid valve
Which structure prevents backflow into the left atrium?
bicuspid valve
the afferent division of the PNS
brings sensory info to CNS
the efferent division of PNS
carries motor commands from CNS to effectors
The superior trunk originates from the branches of which cervical nerve?
C5 and C6
What structure connects the hypothalamus to the pituitary gland?
Infundibulum
Normal heart sounds are caused by which of the following events?
closure of the heart valves
Receptors for hearing are located in the
cochlea
Potentially damaging stimuli that result in pain are selectively detected by:
nociceptors
Where are pacemaker cells found?
SA node
Select the correct statement about the heart valves.
The AV valves are supported by chordae tendineae so that they do not blow back up into the atria during ventricular contraction
The receptors that get adapted over the course of time, and provide information on the intensity and rate of change of a stimulus are termed:
phasic receptors
A special feature of fenestrated capillaries is that they have:
pores
During atrial systole,
The atrioventricular valves are open.
Which type of general sense receptor detects pressure changes in walls of blood vessels and in portions of the digestive, reproductive and urinary tracts?
mechanoreceptors
The inferior trunk gives rise to which cords?
medial and posterior
Which of the following statements is TRUE concerning blood circulation?
The right ventricle pumps deoxygenated blood to the lungs.
Which of the following cranial nerves does not innervate the eye?
facial - CN VII
Where in the spinal cord is the cerebrospinal fluid located?
subarachnoid space
In the brain, the separation of the periosteal layer and the meningeal layer form which structure(s)?
All dural venous sinuses
All blood being drained from the lower limb will take this pathway back to the heart:
External iliac vein, common iliac vein, inferior vena cava
The ___________________________nerve is the longest cranial nerve. It even goes down to the abdominal cavity and innervates the digestive system.
vagus
Which of the following is NOT part of the conduction system of the heart?
AV valve
Which cranial nerve has a cranial root and a spinal root?
Accessory nerve - CN XI
The left internal carotid artery carries blood from the:
Common carotid artery to the brain
Although rare, brain stem damage may occur due to inflammation produced by other brain injuries. Which of the following functions will be affected due to damage in the Pons?
Communication between cerebellum and cerebrum.
The "lubb" sound heard with a stethoscope is caused by:
Turbulence in the blood when the AV valves close
Damage on which of the following cranial nerves would result in vertigo and unilateral hearing loss?
Vestibulocochlear (CN VIII)
In the spinal cord, the somas of the lower motor neurons are found in the:
anterior horns
Which of the following structures connects the third and fourth ventricles?
aqueduct of the midbrain
Which of the following helps maintain the intraocular pressure; located in the anterior part of the eye?
aqueous humor
The spinal cord tapers at a conical tip called the:
conus medullaris
When the membrane potential of a cell membrane becomes more positive than the resting potential, one can say that the membrane has become:
depolarized
The ____________ is the outermost meninx, and forms supportive and protective partitions between some portions of the brain.
dura mater
The glial cell that helps to form cerebrospinal fluid is the:
ependymal cell
The femoral artery originates from the:
external iliac artery
Pressure, pain, and temperature receptors in the skin are:
exteroceptors
The receptors of olfaction are found in the:
olfactory epithelium
Which of the following is in the correct order of the olfactory pathway?
olfactory epithelium, olfactory nerve, olfactory tract, cerebral cortex
The posterior cord gives rise to which nerves?
radial and axillary
The white, outer tough connective tissue covering of the eyeball is called:
sclera
Which of the following branched patterns of nerves is part of the brachial plexus?
superior trunk, lateral cord, musculocutaneous nerve
The abducens nerve _________.
supplies innervation to the lateral rectus muscle of the eye
In health humans, the cerebrospinal fluid (CSF) flows in a specific direction due to:
the ependymal cells cilia.
Neurotransmitters are found in:
the synaptic cleft
Which structure is known as an AV valve with three flaps?
tricuspid valve
Which structure prevents backflow into the right atrium?
tricuspid valve
When is it that an impulse does not have to reach the brain?
in a reflex arc
the phrenic nerve
reaches diaphragm and innervates it
