Feedback True or False Quiz

Please answer all questions. The numbers at the end of each question refer to the textbook page where the question topic is discussed.

1		The gracilis is a two-joint muscle that can adduct the thigh or flex the leg. (277)
			A)	True
			B)	False
2		A condition of rigor mortis affects skeletal muscle tissue several hours after death, as depletion of ATP within the fibers causes a state of muscle relaxation over the joint. (286)
			A)	True
			B)	False
3		Myasthenia gravis is believed to be an autoimmune disease. (288)
			A)	True
			B)	False
4		Muscle tissue accounts for approximately 40% of body weight. (234)
			A)	True
			B)	False
5		The distal, more stationary, attachment of a muscle is known as its insertion. (236)
			A)	True
			B)	False
6		A retinaculum lubricates and protects, just as a tendon sheath does. (236)
			A)	True
			B)	False
7		Bundles of muscle fibers called fasciculi are surrounded by perimysium. (236)
			A)	True
			B)	False
8		Tendons are continuous with the layer of connective tissue covering muscles known as the epimysium. (236)
			A)	True
			B)	False
9		Synergistic muscles perform opposite functions and are generally located on the opposite sides of a limb. (238)
			A)	True
			B)	False
10		The cytoplasm within a muscle cell is called sarcolemma. (241)
			A)	True
			B)	False
11		Lifting dumbbells is an example of an isotonic contraction. (243)
			A)	True
			B)	False
12		A motor unit's contraction varies in magnitude according to the strength of the nerve stimulus. (244)
			A)	True
			B)	False
13		Contraction of the orbicularis oris muscle compresses the lacrimal gland near the eyeball. (251)
			A)	True
			B)	False
14		The depressor anguli oris muscle causes a frown when contracted. (251)
			A)	True
			B)	False
15		The intrinsic muscles of the tongue are confined within the tongue. (252)
			A)	True
			B)	False
16		The mylohyoid muscle forms the floor of the mouth. (256)
			A)	True
			B)	False
17		The serratus anterior muscle extends from rib to rib and elevates the rib cage during inspiration. (258)
			A)	True
			B)	False
18		The fibers of the external abdominal oblique muscle extend superiorly and medially. (258)
			A)	True
			B)	False
19		The linea alba is an aponeurosis on the midline of the abdomen. (258)
			A)	True
			B)	False
20		The ischiocavernosus muscle aids in the erection of the penis in the male and the clitoris in the female. (260)
			A)	True
			B)	False
21		The rectus abdominis muscle is antagonistic to the erector spinae and spinalis thoracis muscles. (261)
			A)	True
			B)	False
22		The trapezius muscle adducts the brachium. (266)
			A)	True
			B)	False
23		The triceps brachii muscle originates on the humerus and the scapula. (268)
			A)	True
			B)	False
24		The palmaris longus muscle pronates the hand. (269)
			A)	True
			B)	False
25		The fleshy base of the thumb is called the thenar eminence. (275)
			A)	True
			B)	False
26		All three gluteal muscles insert on the greater trochanter of the femur. (276)
			A)	True
			B)	False
27		The quadriceps femoris group of muscles is antagonistic to the hamstring group of muscles. (280)
			A)	True
			B)	False
28		Of the muscles considered the hamstrings, only the short head of the biceps femoris muscle originates on the linea aspera of the femur. (282)
			A)	True
			B)	False
29		The gastrocnemius and soleus muscles are frequently referred to as a single muscle, the triceps surae. (284)
			A)	True
			B)	False
30		Poliomyelitis is a disease of the nervous system that has its effect of skeletal muscles. (288)
			A)	True
			B)	False
31		Muscular dystrophy is a paralysis of muscles due to diseased nerves. (287)
			A)	True
			B)	False
32		The release of epinephrine into the neuromuscular cleft causes muscle contraction. (244)
			A)	True
			B)	False
33		A motor unit consists of a single motor neuron and the aggregation of muscle fibers innervated by the motor neuron. (244)
			A)	True
			B)	False
34		The principal action of the deltoid muscles is abduction of the arm at the shoulder joint. (267)
			A)	True
			B)	False
35		The triceps brachii muscle is the only muscle that extends the forearm at the elbow joint. (268)
			A)	True
			B)	False