What statement about coma is true quizlet?
Which statement about coma is true? coma is neurologically identical to syncope. coma is rarely caused by damage to brain stem structures. during coma, brain oxygen consumption resembles that of a waking state.
Is a coma identical to syncope?
Syncope and loss of consciousness is a common presentation of severe illness. Coma is a state of unconsciousness from which the patient cannot be aroused, even by powerful stimulation.
Which condition is defined as unresponsiveness to stimuli?
Coma. Coma is a state of unresponsiveness, even to stimuli. 4 A person in a coma may lack a gag reflex (gagging in response to a tongue depressor placed at the back of the throat) or a pupillary response (pupils normally constrict in response to light).
Which of the following is the mildest consequences of traumatic brain injury?
What is the Mildest Consequence of Traumatic Brain Injury? A concussion is the mildest form of a traumatic brain injury occurring with a mild blow or strike to the head.
What are the 4 classifications of syncope?
Syncope is classified as neurally mediated (reflex), cardiac, orthostatic, or neurologic (Table 1). The prevalence of these classifications, based on five population-based studies with 1,002 unselected patients with syncope, is shown in Table 2.
What syncope means?
Syncope (SINK-a-pee) is another word for fainting or passing out. Someone is considered to have syncope if they become unconscious and go limp, then soon recover. For most people, syncope occurs once in a great while, if ever, and is not a sign of serious illness.
Which of the following hypothalamic control centers would you predict is the least important for survival?
Which of the following hypothalamic control centers would you predict is the LEAST important for survival? The superchiasmatic nucleus.
What would happen if the caudal portion of the neural tube failed to develop properly?
The canal connecting the third and fourth ventricles and running through the midbrain is the interventricular foramen. If the caudal portion of the neural tube failed to develop properly the ________. … Embryonic damage to the mesencephalon could result in improper formation of the midbrain.
What is located just above the brainstem?
Located above the brainstem, the thalamus processes and transmits movement and sensory information. 8 It is essentially a relay station, taking in sensory information and then passing it on to the cerebral cortex.
Which statement is true of both poliomyelitis and amyotrophic lateral sclerosis ALS )?
Which statement is true of both poliomyelitis and amyotrophic lateral sclerosis (ALS)? Both conditions are caused by destruction of the ventral horn neurons in the spinal cord. Destruction of neurons in the ventral motor horns of spinal cord gray matter results in the paralysis in both conditions.
What is the largest danger associated with a blood clot that’s lodged in a cerebral artery?
A blood clot, or thrombus, can move through the blood stream until it gets stuck in a narrow passageway, becoming what is called an embolus. The blood can no longer pass through the veins and reach organs. An embolus in a coronary artery can cause a heart attack, in a cerebral artery, it can cause a stroke.
Which functional area of the brain is responsible for our level of awareness and alertness?
Which functional area of the brain is responsible for our level of awareness and alertness? The reticular activating system is responsive to our sensory input and controls alertness to these sensory inputs and our awareness and responsiveness to our external (and internal) environment.
Which is the true statement about the synapses in the spinal cord in the stretch reflex?
Which is the true statement about the synapses in the spinal cord in the stretch reflex? Interneurons make inhibitory synapses with neurons that prevent contraction of the antagonist muscle.
Which part of the brain is the executive suite that controls conscious brain activity?
The cerebral cortex is the “executive suite” of the nervous system, where our conscious mind is found.
What part of the brain is most life threatening if damaged?
Injuries to the brain stem can be very serious and life threatening. The brain stem, located in the back bottom portion of the head, is responsible for breathing, heart rate, and sleeping cycles.
What response does the stretch reflex initiate in a muscle?
The stretch reflex or myotatic reflex refers to the contraction of a muscle in response to its passive stretching by increasing its contractility as long as the stretch is within physiological limits.
What letter points to afferent neurons?
Nociceptors and most proprioceptors are tonic receptors because of the protective importance of the information. Three main levels of neural integration operate in the somatosensory system. Which level involves processing in the sensory areas of the cerebral cortex?
Which reflex is triggered when a stranger suddenly grasps your arm?
Which reflex is triggered when a stranger suddenly grasps your arm? The grasped arm is withdrawn (via the flexor reflex) as the opposite arm pushes you away from the attacker (via crossed-extensor reflex).