KEY
Exam #3
Biology 102 Fall 2001
1) Which types of tissues have tightly connected cells with one free surface?
A) Muscle Tissue
B) Nervous Tissue
C) Epithelial Tissues
D) Connective Tissues
E) All of the above
2) Blood is considered to be a type of connective tissue
A) True
B) False
3) In the film "The Universe Within" where was Rob Taylor climbing when he broke his leg?
A) Africa
B) Mount Everest
C) Alaska
D) California
4) Which of the following is a type of tissue formed during early embryo development?
A) Placoderm
B) Embryonic Plexus
C) Echinoderm
D) Endoderm
5) What is interstitial fluid?
A) The fluid found within cells
B) The fluid that surrounds cells
C) Fluid secreted by glands
D) The fluid component of blood
E) The lubricating fluid found in skeletal joints
6) What is the function of the tight junctions found between adjacent epithelial cells?
A) The prevent the flow of material between cells
B) They allow electrical signals to pass from one cell to another
C) They form mechanical connections between the cells
D) Tight junctions are never found between epithelial cells
7) Skeletal muscle cells are long cylinders that normally contain many nuclei.
A) True
B) False
8) The nervous system is made up of two principle cell types, neurons and __________?
A) Adipocytes
B) Chondrocytes
C) Astroblasts
D) Neuroglia
E) Mesocytes
9) Simple feedback systems require three distinct components, a sensor, an integrator
and _______?
A) A receptor
B) A transducer
C) An effector
D) An initiator
10) When comparing the thumb to the biceps muscle, the thumb would be described as distal
to the biceps muscle.
A) True
B) False
11) The normal function of the pancreatic hormone glucagon is to raise the circulating
concentration of glucose in the blood stream.
A) True
B) False
Use the following of pituitary hormones to answer questions 12, 13, and 14. Each answer may be used once, more than once or not at all.
A) LH (Luteinizing Hormone)
B) GH (Somatotropin)
C) ADH (Anti Diuretic Hormone)
D) TSH (Thyroid Stimulating Hormone)
E) ACTH (Corticotropin)
12) Hormone which directly influences the metabolic activity of all cells in the body
B)
13) Hormone which indirectly influences the metabolic activity of all cells in the body
D)
14) Hormone which targets the kidney
C)
15) Peptide hormones such as insulin bind to receptors that are located inside of target cells.
A) True
B) False
16) What is the property that distinguishes exocrine glands from endocrine glands?
A) Exocrine glands have ducts, endocrine glands do not have ducts
B) Exocrine glands only secrete substances onto the body surface
C) Endocrine glands only secrete steroid like substances
D) Exocrine glands are only found in invertebrate animals
E) Endocrine glands are made from modified neurons
Use the following list of endocrine glands to answer questions 17, 18, and 19. Each answer may be used once, more than once or not at all.
A) Thyroid Gland
B) Pineal Gland
C) Adrenal Gland
D) Pancreas
E) Parathyroid Gland
17) Sensitive to changes in light level
B)
18) Requires Iodine for normal function
A)
19) Involved in controlling the circulating concentration of calcium in the blood stream
E)
20) The pancreas is both an exocrine and an endocrine gland
A) True
B) False
21) What is the integument?
A) The structures that link muscle to bone
B) The structures which link bones together
C) The outer covering of the animal body
D) The structure found at the base of all epithelial cell layers
E) None of the above
22) The bones are used as a storage site for minerals such as phosphorous.
A) True
B) False
23) When examining the feathers of a bird, where do these structures come from?
A) They are modified parts of the bird’s skeleton
B) They are a type of connective tissue
C) They are formed from the skin
D) They are a unique type of tissue, derived independently of all other tissues
24) What type of skeleton do insects utilize?
A) Exoskeleton
B) Endoskeleton
C) Hydraulic Skeleton
D) A Reticulated Skeleton
E) Insects do not have a true skeleton
25) Fibrous joints provide for large movements between the bones that they connect.
A) True
B) False
26) What is the function of the Haversian canals found in mature bone?
A) Location of the bone marrow
B) Location of the bone forming cells
C) Passage way for nerves and blood vessels
D) Site of bone re-absorption during breakdown
27) Skeletal muscle cells contain large reserves of ATP which can be used to power their
contractions for extended periods of time.
A) True
B) False
28) Tropomyosin plays what role in muscle contraction?
A) It blocks the ability of myosin to interact with actin unless calcium is present
B) It is a specialized form of myosin found in smooth muscle
C) It conducts the electrical impulse from the nerve cell to the muscle cell
D) It forms part of the thick filament structure
29) The smallest contractile unit of a muscle cell is called the
A) Thin filament
B) Sarcoplasmic reticulum
C) Sarcomere
D) T Tubule
30) What role does creatine phosphate play in muscle contraction?
A) It provides for an alternative source of energy
B) It is a bi-product formed during anaerobic metabolism
C) It forms part of the thick filament
D) It is the signaling molecule released by the motor neuron
31) Which of the following animals have an open circulatory system?
A) A Bluebird
B) A Grasshopper
C) A Rainbow Trout
D) All of the above
E) None of the above
32) Dr. Waller generated the first ECG while he was performing open heart surgery
on his bulldog Jimmie.
A) True
B) False
33) Blood flowing from the heart to the lungs leaves the heart via
A) The right ventricle
B) The left ventricle
C) The right atrium
D) The left atrium
34) Diastole refers to what portion of the cardiac cycle?
A) The period of maximal contraction
B) The period of maximal relaxation (filling)
C) The period in between contraction and relaxation
D) The condition that occurs when the heart stops beating
35) Normally the right atrium and ventricle contract simultaneously. This is followed by the
simultaneous contraction of the left atrium and left ventricle. The result is the hearts
normal alternating "Lub Dup" rhythm.
A) True
B) False
36) How does the electrical signal pass from one heart muscle cell to an adjacent
heart muscle cell?
A) Through Gap junctions which connect adjacent cells
B) Through the release of chemical signals which traverse chemical synapses
C) The cardiac muscle cells are multinucleated so their membranes are continuous
D) Electrical signals cannot easily pass from one heart muscle cell to another
37) The normal value for systolic blood pressure is
A) 120 mm of mercury
B) 80 mm of mercury
C) 250 mm of mercury
D) 40 mm of mercury
38) All blood cells are formed from cells located in the bone marrow
A) True
B) False
39) Which of the following properties are true for capillaries?
A) They are formed from a single layer of cells
B) The rate of blood flow through them is relatively slow
C) They are the primary site of exchange between the blood and tissues
D) They always connect the arterial and venous system
E) All of the above
40) How many valves are found in the human heart?
A) One
B) Two
C) Three
D) Four
Extra Credit!
41) What is acromegly?
A) A disease of the skin caused by over active sweat glands
B) A type of muscle degeneration
C) A condition caused by over production of growth hormone late in life
D) A condition caused by insufficient production of thyroid hormone
42) What property of steroid hormones such as estrogen allows for their delivery
through a skin applied patch?
A) Their high solubility in water
B) Their very small size
C) Their electrical charge
D) Their solubility in lipids
E) Their effectiveness at very low concentrations