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BIOL-2457 EXAM 3 2025-2026|QUESTIONS WITH ANSWERS|100% PASS
Typology: Exams
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The band of collagen fibers that laterally braces the knee is the a. Tensor fasciae latae b. Piriformis c. Iliotibial tract d. Linea alba e. Linea aspera c Which of these muscles is a member of the quadriceps group? a. Vastus lateralis b. Vastus medialis c. Vastus intermedius d. Rectus femoris
e. All of the above e The ___ nervous system controls the skeletal muscles a. Sympathetic b. Autonomic c. Parasympathetic d. Somatic e. Afferent d The muscle that elevates the tongue is the ___ b. Hypoglossus c. Styloglossus d. Palatoglossus e. Genioglossus
During the Cori cycle, in the liver ____ a. Glucose is produced from lactic acid b. Lactic acid is shuffled into muscle cells c. Glucose is released from glycogen d. Lactic acid is produced from pyruvic acid e. Lactic acid is produced from glucose a Which eye muscle sends its tendon of origin through a pulley or trochlea before inserting on the globe? a. Inferior rectus b. Superior oblique c. Inferior oblique d. Superior rectus e. Lateral rectus b
The muscle that extends the arm while doing push-ups is this ____ a. Pectorals b. Brachialis c. Deltoid d. Triceps e. Biceps d The muscle that adducts and rotates the scapula laterally is the ___ a. Serratus anterior b. Pectoralis minor c. Levator scapulae d. Subclavius e. Rhomboid e
Blood vessels that supply the spinal cord run along the surface of the
a. Epidural space b. Dura mater c. Subdural space d. Subarachnoid space e. Pia mater e The layer of connective tissue that surrounds a fascicle within a peripheral nerve is the ____ a. Endoneurium b. Epineurium c. Endosteum d. Perineurium e. Epimysium d
The most common lever systems in the body are those that have the applied force between the fulcrum and the load/resistance. These are called the _____. a. First-class b. Second-class c. Third-class d. Fourth-class e. Fifth-class c Deteriorating changes in the distal segment of an axon is called ____ degeneration. a. Peripheral b. Neural c. Wallerian d. Conduction e. Central
Which of the following is not a possible drug effect on synaptic function? a. Prevent neurotransmitter inactivation b. Interfere with neurotransmitter re-uptake c. Interfere with neurotransmitter synthesis d. Block neurotransmitter binding to receptos e. Change the type of receptor found in the postsynaptic membrane e Neurons that have one axon and one dendrite with the soma in between are called ____. a. Tripolar b. Anaxonic c. Bipolar d. Unipolar e. Multipolar c
Opening of sodium channels in the axon membrane causes ____. a. Depolarization b. Repolarization c. Hyperpolarization d. Increased positive charge inside the membrane e. Both A and D e Voltage-gated channels are present ____. a. On the surface of the dendrites b. In the membrane that covers axons c. Along the perikaryon of neurons d. On the soma of neurons e. At the motor end plate b
When acetylcholine binds to receptors at the motor end plate, the end plate membrane becomes _____. a. Less permeable to potassium ions b. More permeable to sodium ions c. Less permeable to sodium ions d. More permeable to calcium ions e. Repolarized b How would the loss of acetylcholinerase from the motor end place affect skeletal muscle? a. It would have little effect on skeletal muscles b. It would cause flaccid paralysis (muscles are relaxed and unable to contract) c. It would make the muscles less excitable d. It would produce muscle weakness e. It would cause spastic paralysis (muscles are contracted and unable to relax)
e In response to action potentials arriving along the transverse tubules, the sarcoplasmic reticulum releases ____. a. Acetylcholine b. Hydrogen ions c. Calcium ions d. Potassium ions e. Sodium ions c How would a drug that blocks acetylocholine receptors at the motor end plate affect skeletal muscle? a. It would cause spastic paralysis (muscles are contracted and unable to relax) b. It would produce uncontrolled muscle spasms c. It would cause flaccid paralysis (muscles are relaxed and unable to contract) d. It would make the muscles more excitable
a Muscles with fibers that run perpendicular to the long axis of the body are called _____. a. Oblique b. Medialis c. Rectus d. Transversus e. Lateralis d Muscles located entirely within an organ are called ____. a. Externus b. Intrinsic c. Extrinsic d. Internus e. Profundus b
The ____ covers the anterior surface of the neck a. Orbicularis oris b. Platysma c. Occipitofrontalis d. Buccinators e. Epicranium b A muscle whose name ends in the suffix-glossus would be found within or attached to the ____. a. Jaw b. Cheek c. Tongue d. Lips e. Chin c
If a second stimulus arrives before the relaxation phase has ended, a second, more powerful contraction occurs. This is called ____. a. Recruitment b. Wave Summation c. Incomplete tetanus d. Treppe e. Complete tetanus b Large-diameter, densely packed myofibrils, large glycogen reserves, and few mitochondria are characteristics of ____. a. Slow fibers b. Intermediate fibers c. Fast fibers d. Fatty muscles e. Red muscles c
The increase in muscle tension that is produced by increasing the number of active motor units is called ____. a. Treppe b. Recruitment c. Incomplete tentanus d. Complete tetanus e. Wave summation b When a muscle is stimulated repeatedly at a high rate, the amount of tension gradually increases to a steady maximum tension called ____. a. Wave summation b. A twitch c. Incomplete tetanus d. Complete tetanus e. Recruitment d
