test 3 quiz questions
The larynx is composed of ______________ big pieces of cartilage.
3; 1 elastic (epiglottis), 2 hyaline (cricoid and thyroid)
Which of the following is NOT part of the conduction system of the heart?
AV valve
During atrial systole,
AV valves are open
The "lubb" sound heard with a stethoscope is caused by:
AV valves closing
Veins need valves because:
Blood pressure is lowest in veins so the valves help it to oppose the force of gravity
The inferior mesenteric artery supplies blood to the:
Descending colon, sigmoid colon and rectum
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
Where are pacemaker cells found?
SA node
Which of the following helps maintain the intraocular pressure; located in the anterior part of the eye?
aqueous humor
Which structure is known as AV valve with two flaps?
bicuspid valve
The ridge found at the bifurcation of the trachea is called the:
carina
Where does the spinal cerebellar tract end?
cerebellum
Where the does spinothalamic tract end?
cerebrum
The vascular coat of the eyeball is called:
choroid
Conscious perception of vision probably reflects activity in the:
cortex of occipital lobe
The cell body of a first order neuron will be located in the:
dorsal root ganglion
A thick midline ridge in the thyroid cartilage that is sometimes referred to as the Adam's apple is technically named the:
laryngeal prominence
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 larger the receptive field, the __________ it is to localize the stimulus.
more difficult
Potentially damaging stimuli that result in pain are selectively detected by:
nociceptors
Which of these types of receptors responds to pain stimuli?
nociceptors
When viewing a dissected heart, it is easy to visually discern the right and left ventricles by:
noticing the thickness of ventricular walls
The ___________ is lined by squamous epithelium.
oropharynx
The __________ separates the nasal and oral cavities.
palate
Small muscle masses attached to the chordae tendineae are the:
papillary muscles
Blood is pushed out from the right atrium into the right ventricle (every last drop of it) by this muscle. Can you name the structure?
pectinate muscles
A special feature of fenestrated capillaries is that they have:
pores
Which type of neuron has a tract that goes from the effector organ to the spinal cord?
pseudounipolar
Olfactory glands function to:
secrete mucus
_________occurs when a receptor becomes so accustomed to the stimulation that it stops gathering impulses.
sensory adaptation
The cell body of a second order neuron will be located in the:
spinal cord
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
Which of the following statements is TRUE concerning blood circulation?
the right ventricle pumps deoxygenated blood to the lungs.
Which structure prevents backflow into the right atrium?
tricuspid valve
Which structure separates the external auditory canal form the middle ear?
tympanic membrane