BIOL 235 MIDTERM 2 EXAM TESTBANK 2023

EXAM TESTBANK 2023 1. A lever is acted on at two different points by two different forces that are called the a. Fulcrum and resistance b. Leverage and load c. Lever and resistance d. Effort and load e. Lever and effort 2. Which of the following is true? a. The origin of a muscle on a limb is usually proximal to its insertion b. A muscle must cover the limb or other body part it moves c. Muscles crossing one joint have more complex actions than those crossing two joints d. A and B are correct e. A, B and C are correct ? 3. What is the action of gluteus maximus? a. Abducts thigh at hip joint and medially rotates thigh b. Extends thigh at hip joint and laterally rotates thigh c. Flexes thigh at hip joint d. Flexes leg at knee joint e. Adducts and flexes thigh at hip joint ? 4. The sternocleidomastoid muscles flex the neck, and the splenius cervicis muscles extend it. What is the relationship between these muscles when bowing your head? a. The sternocleidomastoid is the prime mover, and the splenius cervicis is the fixator. b. The sternocleidomastoid is the prime mover, and the splenius cervicis is the synergist. c. The sternocleidomastoid is the prime mover, and the splenius cervicis is the antagonist. d. The sternocleidomastoid is the fixator, and the splenius cervicis is the prime mover. e. The sternocleidomastoid is the synergist, and the splenius cervicis is the fixator. 5. If you dissect on the lateral side of the abdomen, what abdominal muscles, in order from superficial to deep, will the scalpel go through? a. Rectus abdominis, external oblique, internal oblique b. External oblique, internal oblique, transversus abdominis c. Transversus abdominis, rectus abdominis, external oblique d. External oblique, transversus abdominis, rectus abdominis e. Internal oblique, transversus abdominis, external oblique 6. Which of the following actions does the deltoid perform? a. Adduction of the arm b. Abduction of the arm c. Flexion of the forearm d. Extension of the forearm e. Both abduction of the arm and flexion of the forearm deltoid does not assist in flexion of the forearm lOMoARcPSD| 7. Which of the following muscles is used in forceful breathing? a. Diaphragm b. External intercostals c. Internal intercostals d. A and B are correct e. A, B and C are correct ? 8. Which of the following correctly describes a function of the nervous system? a. Sensory: detects changes in the environment; relays information to the brain and spinal cord b. Integrative: response system; stimulates muscles to contract or glands to secrete c. Motor: processes and make decisions regarding sensory input; responsible for perception d. A and B are correct e. A, B and C are correct ? 9. Which of the labeled cells in the diagram is a neuroglial cell that produces and assists in the circulation of cerebrospinal fluid? a. A b. B c. C d. D e. F 10. Which of the following is true of a synapse? a. The presynaptic neuron carries a nerve impulse away from a synapse. b. The postsynaptic neuron carries a nerve impulse toward a synapse. c. A synapse is the site where two neurons or a neuron and an effector meet. d. The presynaptic neuron releases chemical messengers called hormones.