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Sensory receptors monitor light, monitor sound, are part of the PNS, or detect changes in and outside the body
Which of the following are a type of neruoglia? Astrocyte, Oligodendrocyte, Ependymal cell or Schwann cell
Axons of the CNS lack Schwann cells
A reason that the CNS and PNS differ in their ability to regenerate after injury is that
When an action potential passes over the surface of a synaptic knob, the contents of the vesicles are released in response to the presence of?
A stimulus great enough to change the membrane potential and propagate an action potential is said to have reached?
Which of the following ions cross cell membranes most readily? Potassium, Sodium, Calcium, Carbonate, or Magnesium
What is the correct sequence of events that follows a threshold potential? 1.the membrane depolarizes. 2. Sodium channels open and sodium ions diffuse inward. 3. The membrane repolarizes. 4. Potassium channels open and potassium ions diffuse outward.
informs the autonomic centers in the brainstem and hypothalamus about the internal environment.
protects the brain
protects the spinal cord
provides a pathway for waste to enter the blood
crossed extensor reflex
When the flexor muscles of one arm contract in a withdrawal reflex, the extensor muscles of the other arm contract. This phenomenon is called?
The spinal cord has 31 segments, a cervical and lumbar enlargement, a core of gray matter surrounded by white matter, two deep longitudinal grooves
Motor control of the muscles assoicated with speech is lost
If the area of the cerebral hemisphere corresponding to Broca's area is damaged
Anterior pituitary gland
Which of the following is not part of the diencephalon? Thalamus, Hypothalamus, Anterior pituitary gland, or posterior pituitary gland
The area of skin supplied by sensory nerve fibers from a particular dorsal root is called a
The condition in which some parts of an image are in focus on the retina and other parts are
Are soluble in water
combine with protein receptor molecules
cause messenger RNA synthesis
consist of complex organic rings
enhances the movement of amino acids
increases the rate of protein synthesis
increases the rate of fat metabolism
conserve sodium and excrete potassium
Aldosterone promotes the homeostasis of ions by causing kidneys to
The somatic nervous system controls voluntary actions and the autonomic nervous system oversees involuntary action
Receptors that are stimulated by changes in chemical concentrations are called thermoreceptors
The utricle and saccule contain the sensory receptors associated with the sense of dynamic equilibrium
The nervous system releases hormones at synapses and the endocrine system releases neurotranssmitters into the bloodstream
Steroid hormones diffuse through cell membranes, then bind with receptors, whereas nonsteroid hormones bind receptors on the target cell membrane
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