Anatomy_Midterm2_Review

Front 1

1) Hematocrit measures the percentage of blood volume that consists of

Back 1

red blood cells (RBCs).

Front 2

2) What type of white blood cell increases dramatically during parasitic infections or allergic reactions?

Back 2

eosinophil

Front 3

3) The functions of platelets include all of the following except 3) _______

A) formation of a temporary patch in the walls of damaged blood vessels.
B) release of chemical signals that trigger the immune response.
C) secretion of chemicals that call more platelets to the site of injury.
D) release of molecules that initiate clotting.

Back 3

B

Front 4

4) Hemopoiesis is 4) _______

Back 4

blood cell production.

Front 5

5) Which of the following vessels does not carry oxygen-poor blood to the right ventricle? 5) _______

Back 5

A) the pulmonary vein

Front 6

6) All of the following statements concerning a myocardial infarction are correct except 6) _______

A) is often caused by blockage of the coronary arteries.
B) is often associated with atherosclerosis.
C) death occurs almost immediately in 50% of the cases.
D) involves the death of heart muscle cells.

Back 6

C

Front 7

7) What structures anchor the chordae tendineae? 7) _______

Back 7

D) papillary muscles

Front 8

8) Which of the following structures is not found in the left ventricle? 8) _______

A) the bicuspid valve
B) the trabeculae carneae
C) the pectinate muscles
D) the papillary muscles

Back 8

C

Front 9

9) Semilunar valves are located 9) _______

Back 9

C) between the ventricles and the great arteries.

Front 10

10) Which vessel returns most of the venous blood from the heart to the right atrium? 10) ______

Back 10

A) the coronary sinus

Front 11

11) With which of the following activities are normal heart sounds chiefly associated? 11) ______

Back 11

A) closure of the heart valves

Front 12

12) Of the three layers of the heart wall, the layer that contains the cardiac muscle is the 12) ______

Back 12

D) myocardium.

Front 13

13) Systole of the ventricle means that this chamber is 13) ______

Back 13

. D) contracting.

Front 14

14) When the right atrium is in diastole, it is 14) ______

Back 14

D) relaxing.

Front 15

15) Which of the following is not part of the conduction system of the heart? 15) ______

Back 15

A) AV valve

Front 16

16) Which layer of blood vessels contains smooth muscle tissue? 16) ______

Back 16

D) tunica media

Front 17

17) Functionally, there are no valves in arteries (as opposed to in veins) because 17) ______

Back 17

D) the blood pressure in arteries is high enough that there is no backflow of blood.

Front 18

18) Blood pressure is highest in the 18) ______

Back 18

A) elastic arteries.

Front 19

19) In a capillary bed, relaxation of the precapillary sphincters causes more blood to flow 19) ______

Back 19

C) through the true capillaries.

Front 20

20) Which of the following is not true of arteries? 20) ______

A) Arteries have a larger lumen than veins of similar size.
B) Arteries have more elastin than veins.
C) Arterial walls are thicker than venous walls.
D) Arteries carry oxygenated blood to the heart.

Back 20

D

Front 21

21) Fenestrated capillaries 21) ______

Back 21

B) have pores in their walls.

Front 22

22) What prevents the backflow of blood in veins? 22) ______

Back 22

C) valves

Front 23

23) The lymphatic capillaries are 23) ______

Back 23

B) more permeable than blood capillaries.

Front 24

24) The system of lymphatic vessels performs all of the following functions except 24) ______

A) returning excess tissue fluid to the bloodstream.
B) returning leaked blood proteins to the bloodstream.
C) carrying blood.
D) transporting digested fats.

Back 24

C

Front 25

25) Which of the following does not enter lymph capillaries with ease? 25) ______

A) cancer cells
B) proteins from tissue fluid
C) red blood cells
D) tissue fluid

Back 25

C

Front 26

26) Ganglia represent 26) ______

Back 26

C) groups of neuron cell bodies.

Front 27

27) Which of the following is the correct arrangement of a reflex arc? 27) ______

Back 27

B) receptor, sensory neuron, integration center, motor neuron, effector

Front 28

28) Which cells provide the myelin sheath for neurons in the CNS? 28) ______

Back 28

A) oligodendrocyctes

Front 29

29) White matter represents 29) ______

Back 29

D) axons traveling together in the CNS.

Front 30

30) Myelin on axons functions to 30) ______

Back 30

D) speed the rate of impulse conduction and insulate neighboring axons from one another.

Front 31

31) Unmyelinated axons 31) ______

Back 31

D) conduct impulses more slowly than myelinated axons.

Front 32

32) True action potentials begin at 32) ______

Back 32

B) the axon hillock.

Front 33

33) A node of Ranvier 33) ______

Back 33

B) is a bare region of axonal membrane in myelinated axons only.

Front 34

35) The function of the blood-brain barrier is to 35) ______

Back 34

D) help protect the central nervous system.

Front 35

36) An effect of cutting the corpus callosum would be that 36) ______

Back 35

D) the right cerebral hemisphere cannot communicate directly with the left hemisphere.

Front 36

37) The brain stem consists of the 37) ______

Back 36

A) midbrain, medulla, pons

Front 37

38) Neural centers that control heart rate, respiration, and blood pressure are located in the 38) ______

Back 37

C) medulla.

Front 38

41) Motor neurons to skeletal muscle belong to the 41) ______

Back 38

B) somatic division of the nervous system.

Front 39

42) The parasympathetic nervous system is characterized by 42) ______

Back 39

B) peripheral ganglia near the organs, and short postganglionic fibers.

Front 40

43) Which autonomic division increases heart rate? 43) ______

Back 40

B) sympathetic

Front 41

44) The ANS is considered to be the involuntary nervous system. 44) ______

Back 41

True

Front 42

45) Oligodendrocytes and Schwann cells myelinate neurons within the peripheral nervous system.

Back 42

False

Front 43

46) The hypothalamus is in control of emotional responses, in addition to the cerebral cortex. 46) ______

Back 43

True

Front 44

47) The pituitary is a part of the brain that is intimately tied to the endocrine system. 47) ______

Back 44

True

Front 45

48) The dermatomes are areas of skin that are innervated by the cutaneous branches from one spinal nerve.

Back 45

True

Front 46

49) Contraction of the heart proceeds first on the right side of the heart and secondly on the left. 49) ______

Back 46

False

Front 47

50) The conducting system of the heart is the blood vessels that supply blood to the heart walls. 50) ______

Back 47

False

Front 48

1. Common characteristics of the three types of muscle tissue is that

Back 48

Contraction is triggered by the release of calcium

Front 49

2. peristalsis is a type of contraction seen in

Back 49

smooth muscle

Front 50

3. which of the following is not found in the thick filament

Back 50

actin (thick = cross bridges, myosin, ATPase)

Front 51

4. As the skeletal muscles enlarge in a weight lifter, all of the following occur except that
a. The muscle cells divide mitotically
b. Myofilaments become more abundant in the muscle cells
c. Myofibrils become more abundant in the muscle cells
d. The muscle cells grow large

Back 51

a

Front 52

5. the sarcoplasmic reticulum stores
calcium

Back 52

a

Front 53

6.In striated muscle, the I band is where

Back 53

Thin filaments occur

Front 54

7.In skeletal muscle fibers, a band or zone that contains both thick and thin myofilaments is

Back 54

A band