BIOL 1322 MIDTERM EXAM STUDY
GUIDE WITH ANSWERS
◉ reflex arc
Answer: Stimulus detected by sensory receptor, transmitted to
spinal cord through afferent neuron, response generated and
transmitted to effector organ through efferent neuron.
◉ nervous system
Answer: -works with the endocrine system to maintain homeostasis
-communicates with the body via action potentials
Correct answer
-is responsible for thoughts and behaviours
-initiates voluntary movements
◉ Propagation of an action potential in a single direction down a
neuron requires
Answer: Brief inactivation of sodium ion channels following
depolarization of the membrane
◉ During synaptic transmission of an action potential, Ca2+ __
Answer: enters synaptic end bulbs through voltage-gated channels
,◉ Which ion channels open in response to a change in membrane
potential and participate the the generation and propagation of
action potentials?
Answer: voltage-gated channel
◉ Schwann cell
Answer: wrap around axons to form myelin sheaths in peripheral
nervous system. insulate axons and speed up action potentials.
◉ Oligodendrocytes
Answer: form myelin sheath in central nervous system. same as
Schwann cells, but one oligodendrocyte can myelinate several axons.
◉ Release of neurotransmitters at the axon terminal is initiated by
this cation
Answer: Calcium
◉ Five special senses
Answer: Taste, smell, vision, hearing, equilibrium
◉ Fibroblasts
Answer: In connective tissue, cells that secrete collagen, elastin or
reticular fibres.
, ◉ Phospholipid bilayer
Answer: composed of polar heads and a non-polar body
◉ Sagittal
Answer: divides body into left and right
◉ frontal
Answer: divides body into front and back
◉ transverse
Answer: divides body into upper and lower parts
◉ three conditions that must be maintained in the internal
environment by homeostasis
Answer: -proper concentration of gases, nutrients, water, and salts
-optimum temperature (37)
-optimum pressure
◉ define internal environment
Answer: extracellular fluid (ECF)
◉ main types of extracellular fluid (ECF)
GUIDE WITH ANSWERS
◉ reflex arc
Answer: Stimulus detected by sensory receptor, transmitted to
spinal cord through afferent neuron, response generated and
transmitted to effector organ through efferent neuron.
◉ nervous system
Answer: -works with the endocrine system to maintain homeostasis
-communicates with the body via action potentials
Correct answer
-is responsible for thoughts and behaviours
-initiates voluntary movements
◉ Propagation of an action potential in a single direction down a
neuron requires
Answer: Brief inactivation of sodium ion channels following
depolarization of the membrane
◉ During synaptic transmission of an action potential, Ca2+ __
Answer: enters synaptic end bulbs through voltage-gated channels
,◉ Which ion channels open in response to a change in membrane
potential and participate the the generation and propagation of
action potentials?
Answer: voltage-gated channel
◉ Schwann cell
Answer: wrap around axons to form myelin sheaths in peripheral
nervous system. insulate axons and speed up action potentials.
◉ Oligodendrocytes
Answer: form myelin sheath in central nervous system. same as
Schwann cells, but one oligodendrocyte can myelinate several axons.
◉ Release of neurotransmitters at the axon terminal is initiated by
this cation
Answer: Calcium
◉ Five special senses
Answer: Taste, smell, vision, hearing, equilibrium
◉ Fibroblasts
Answer: In connective tissue, cells that secrete collagen, elastin or
reticular fibres.
, ◉ Phospholipid bilayer
Answer: composed of polar heads and a non-polar body
◉ Sagittal
Answer: divides body into left and right
◉ frontal
Answer: divides body into front and back
◉ transverse
Answer: divides body into upper and lower parts
◉ three conditions that must be maintained in the internal
environment by homeostasis
Answer: -proper concentration of gases, nutrients, water, and salts
-optimum temperature (37)
-optimum pressure
◉ define internal environment
Answer: extracellular fluid (ECF)
◉ main types of extracellular fluid (ECF)
