This muscle rolls the eyeball.
Answer Choices:
Superior rectus, Superior oblique, Medial rectus, Inferior rectus, Lateral rectus
Answer: Superior oblique
Loss of smell sensation is known as:
Answer Choices:
Cacosmia, Hyperopia, Myopia, Anosmia, Agnosia
Answer: Anosmia
The white of the eye is called:
Answer Choices:
Choroid, Cornea, Retina, Tunica fibrosa
Answer: Tunica fibrosa
Which of the following is a structure of the middle ear?
Answer Choices:
Tympanic membrane, Malleus, Saccule/pinna, Cochlear canal
Answer: Tympanic membrane
Which of the following is a sense of taste caused by alkaloids in food?
Answer Choices:
Sour, Umami, Sweet, Salty, Bitter
Answer: Bitter
Self-disclosure can play a key role in addiction recovery.
Answer Choices:
True, False
Answer: True
Proxure manipulation lies:
Answer Choices:
Flexion contracture, Adduction deformation, Anteroposterior spinal pivot, All of the above are true
Answer: All of the above are true
What molecule must bind to the myosin head in order to detach the myosin from the actin? Without a constant supply of this molecule in our bodies, the myosin heads remain attached to the actin in a state of constant contraction, or a rigor complex also known as rigor mortis.
Answer Choices:
ATP, Sodium, Calcium, Acetylcholine
Answer: ATP
Rhabdomyolysis is associated with all of the following features except:
Answer Choices:
All except two options are features of this state, It is characterized by muscle fiber damage so severe that intracellular contents spill from the cell, It can be caused by extreme exercise, cholesterol-lowering drugs and/or traumatic events, It leads to ionic and molecular imbalances that negatively impact other systems, It may lead to facial paralysis
Answer: It may lead to facial paralysis
When a muscle cell contracts, communication between the overlying connective tissue and contractile units must be accomplished. A genetic disorder called ________ occurs when a linking protein called ________ is defective and does not promote communication between muscle and connective tissue. This disorder is characterized by ________ paralysis.
Answer Choices:
ALS – titin – flaccid, Myasthenia gravis – myosin – flaccid, Duchenne dystrophy – dystrophin – flaccid, Myasthenia gravis – dystrophin – flaccid
Answer: Duchenne dystrophy – dystrophin – flaccid
Substances that act on the ________ (the ionotropic receptor of muscles) lead to problems with the muscular system; for instance, poisons often act as antagonists to the receptor producing ________ paralysis.
Answer Choices:
nAChR, flaccid, mAChR, flaccid, Voltage-gated sodium channels, endogenous, nAChR, spastic
Answer: nAChR, flaccid
Muscle dysfunction occurs at all of the following structures/levels except:
Answer Choices:
The whole muscle and its supporting tissues, The nervous system controlling muscle activity, All options can be impacted by muscular dysfunction, The myofiber sarcolemma, The NMJ synapse
Answer: The NMJ synapse
________ is a regulatory protein that binds to calcium and moves ________ a regulatory protein that blocks contractile protein interaction.
Answer Choices:
Dystrophin – titin, No option is correct., Actin – myosin, Tropomyosin – troponin, Troponin – tropomyosin
Answer: Troponin – tropomyosin
________ is an autoimmune disease that attacks the muscle receptor leading to ________ paralysis; treatment for this disease includes pharmaceuticals that inhibit a key synaptic enzyme called ________ thereby increasing the amount of neurotransmitter in the synapse and promoting muscle contraction.
Answer Choices:
ALS – spastic – ACHE, Myasthenia gravis – flaccid – nAChR, Muscular dystrophy – flaccid – ACHE, Myasthenia gravis – flaccid – ACHE
Answer: Myasthenia gravis – flaccid – ACHE
Muscular excitation phase:
Answer Choices:
Is mediated by SERCA and regulatory proteins, Utilizes calcium in the terminal to stimulate neurotransmitter exocytosis, No option is correct., Involves direct bonding between motor neuron terminal and muscle cell sarcolemma; lining they must be physically touching for excitation to occur., Produces a muscular action potential that propagates in one direction.
Answer: Produces a muscular action potential that propagates in one direction.
Slow oxidative muscle fibers:
Answer Choices:
Have few mitochondria and myoglobin., Are more prevalent in muscles used for activities that require high force production., Have high amounts of lipids and blood vessels in close proximity., Produce fast muscle twitch events that have brief contraction/relaxation phases., Are well-suited to perform anaerobic respiration.
Answer: Have high amounts of lipids and blood vessels in close proximity.
Z-disc:
Answer Choices:
Defines the length of the sarcomere., Acts as an attachment point for myosin tails., Is a region where myosin heads are dominant., Has the M-line in the center.
Answer: Defines the length of the sarcomere.
Muscle that performs extension as one its primary movements.
Answer Choices:
Vastus medialis, Biceps femoris, Deltoid, Adductor longus, Semitendinosus, Latissimus dorsi
Answer: Vastus medialis
Muscle that performs flexion as one its primary movements.
Answer Choices:
Biceps femoris, Latissimus dorsi, Rectus femoris, Triceps brachii, Adductor longus, Deltoid
Answer: Biceps femoris