A & P I Exam 3
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| 93. A cute, little curly haired child is sitting behind you in church. You turn around for a moment and she sticks her tongue out at you. Which tongue muscle did she use? | show 🗑
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| 94. Which group of muscles flexes and rotates the neck? | show 🗑
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| show | the sartorius
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| 96. Which muscles insert by the calcaneal tendon? | show 🗑
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| 97. If a lever operates at a mechanical disadvantage, it means that the | show 🗑
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| 98. Which muscles compress the abdomen? | show 🗑
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| 99. A muscle group that works with and assists the action of a prime mover is a(n): | show 🗑
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| 100. List the muscle located on the dorsal side of the body (trunk) | show 🗑
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| show | Semitendinosus, semimembranosus, biceps femoris
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| show | buccinator
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| show | sternocleidomastoid
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| show | -Muscles produce movement by pulling on bones.
-The bones serve as levers.
-The movements produced may be of graded intensity
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| show | -muscle location
-the type of action they cause
-muscle shape
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| show | triceps brachii
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| show | closes, purses, and protrudes the lips
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| show | muscles look like a feather
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| 109. The extensor digitorum longus has which type of fascicle arrangement? | show 🗑
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| 110. Tennis players often complain about pain in the arm (forearm) that swings the racquet. What muscle is usually strained under these conditions? | show 🗑
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| 111. To exhale forcibly, one would contract the: | show 🗑
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| 112. Paralysis of which muscles would make an individual unable to flex the thigh? | show 🗑
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| 113. Describe a First-class lever: | show 🗑
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| show | deltoid
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| 117. List the flexors of the thigh? | show 🗑
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| show | tibialis anterior
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| show | the vastus lateralis
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| show | hamstring muscles
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| show | tibialis posterior, flexor digitorum longus
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| 122. ________ is a powerful forearm extensor. | show 🗑
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| show | serratus anterior
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| 124. The ________ runs deep to the external oblique. | show 🗑
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| 125. The ______ helps keep food between the grinding surfaces of the teeth during chewing | show 🗑
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| 126. ________ draws the corners of the mouth downward as in expressing horror. | show 🗑
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| show | Masseter
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| 128. The pectoralis major has a ________ arrangement of fascicles. | show 🗑
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| show | Transversus
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| 130. The quadriceps femoris is composed of three vastus muscles and the | show 🗑
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| show | Teres major
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| 132. ________ extends the great toe. | show 🗑
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| show | muscles of the front and sides of the thigh
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| show | bulging muscles between the tendinous intersections
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| 135. Muscles that act as synergists seem to have valuable functions, especially in stabilizing joints. Briefly explain their function. | show 🗑
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| show | prime mover is the muscle that causes the desired movement to occur
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| show | Gluteus maximus, gluteus medius, and gluteus minimus
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| show | biceps femoris, semitendinosus, and semimembranosus
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| 139. Malcolm was bending over to pick up a heavy box when he was suddenly startled by a rat. He experienced severe pain in his back with muscle spasms and was unable to straighten up. What muscles could have been affected? | show 🗑
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| show | the fulcrum is operating at a disadvantage, but the advantage is that the load can move over large distances
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| 142. Which muscle is used for normal breathing and which additional muscles are used when performing strenuous exercises? | show 🗑
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| show | impossible to achieve an erection of the penis and the clitoris would not become erect
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| show | open ion channels to provoke rapid responses
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| 146. State Ohm's law and describe its relevance to nerve impulses | show 🗑
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| show | acetylcholine
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| 148. The period after an initial stimulus when a neuron is not sensitive to another stimulus is the: | show 🗑
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| show | synapse
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| 150. The role of acetylcholinesterase is to: | show 🗑
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| show | neurotransmitter
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| show | the myelin sheath
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| 153. Which ions are actively transported through the cell membrane to establish a resting potential? | show 🗑
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| 154. Describe the measurement of membrane potential. | show 🗑
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| show | pumps three sodium ions outside the cell
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| show | is essential for impulse propagation
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| show | hyperpolarization
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| show | A single type of channel will open
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| show | generator potential
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| show | are short-lived
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| 162. A second nerve impulse cannot be generated until: | show 🗑
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| 163. In what way does the interior surface of a cell membrane of a resting (nonconducting) neuron differ from the external environment? The interior is: | show 🗑
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| show | the impulse would spread bidirectionally
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| 165. That part of the nervous system that is voluntary and conducts impulses from the CNS to the skeletal muscles is the ________ nervous system. | show 🗑
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| 166. ________ are found in the CNS and act as the glue that binds axons and blood vessels to each other. | show 🗑
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| 167. The gap between Schwann cells in the peripheral system is called a(n) | show 🗑
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| show | Ohmʹs
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| 169. The most common synapse in embryonic nervous tissue is the | show 🗑
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| show | parallel
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| 171. ________ potentials are short-lived, local changes in membrane potential that can be either depolarized or hyperpolarized. | show 🗑
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| 172. ________ is a disease that gradually destroys the myelin sheaths of neurons in the CNS, particularly in young adults. | show 🗑
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| 173. When one or more presynaptic neurons fire in rapid order it produces a much greater depolarization of the postsynaptic membrane than would result from a single EPSP; this event is called ________ summation. | show 🗑
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| show | GABA
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| 175. Define neurotransmitter. Name two amino acid neurotransmitters, two catecholamines, and two peptides. | show 🗑
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| show | Increased diameter results in increased surface area
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| 177. Imagine a neuron that has several hundred axonal knobs impinging on it. The majority of these axonal knobs are shown to be "firing." However, the neuron in question does not transmit an impulse. Give a valid explanation of why this could occur. | show 🗑
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| 178. Why does a hyperpolarization phase generally follow a repolarization phase in an action potential? | show 🗑
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| show | Sensory and motor divisions
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| 180. Since all action potentials are alike, how does the brain separate situations that require immediate attention from ordinary "positional" reports? | show 🗑
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| 181. How can a single axon respond to several different kinds of events? | show 🗑
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| show | They provoke a sensation of pain
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| 183. How can potentially poisonous gasses like NO and CO be used by the body? | show 🗑
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| show | electrical synapse
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