rasmussen MA278/BSC2346 Module 5 midterm 2019 Graded
• Question 1
1 out of 1 points
Wolff’s law of bone states that bone density is directly related to the dietary ingestion of calcium.
True
False
• Question 2
1 out of 1 points
Which statement is true regarding osteoporosis?
It is loss of density of the matrix in spongy bone only
It is most commonly diagnosed in pre-menopausal women
Vitamin D plays an important role in its prevention
Vertebrae and femoral neck fractures are a common complication in males only
• Question 3
1 out of 1 points
Osmosis is the movement of random molecules from a low to high concentration across a selectively permeable membrane.
True
False
• Question 4
1 out of 1 points
Acetylcholine molecules must bind to troponin in order for the muscle contraction process to occur.
True
False
• Question 5
1 out of 1 points
Which statement is true of the glenohumeral (shoulder) joint?
The glenoid cavity can be found on the clavicle
The bones of the shoulder joint include the humerus, scapula and sternum
The shoulder is among the most stable joints in the body
The SITS muscle tendons help stabilize the shoulder joint
• Question 6
1 out of 1 points
A motor unit is composed of all the muscle fibers that one motor neuron innervates.
True
False
• Question 7
1 out of 1 points
Which choice is true regarding bone tissue?
Trabeculae are found within compact bone
The periosteum is the inner, blood cell producing portion of bone
Osteocytes reside within a little open space called lacuna within bone tissue
One of the organic materials of bone include calcium
• Question 8
1 out of 1 points
Parathyroid hormone will cause an increase activity in which of the following cells?
Osteoclasts
Osteoblasts
Osteocytes
Osteogenic cells
• Question 9
1 out of 1 points
Which of the following choices contains ridges that are ultimately responsible for fingerprints?
Flexure lines
Dermal papillae
Friction ridges
Reticular layer
• Question 10
1 out of 1 points
Which cellular organelle is responsible for the production of ATP?
Mitochondria
Lysosome
Gogli
apparatus
Nucleus
• Question 11
1 out of 1 points
Which statement is true of muscular tissue and/or muscle contraction?
A sarcomere consists of thin filaments only
The sarcoplasmic reticulum stores the acetylcholine molecules utilized for muscle contraction
Slow oxidative muscle fibers contain myoglobin giving these fibers a reddish color
The passing of the action potential from the nerve to the muscle cell occurs because the nerve is in direct contact with the muscle cell
• Question 12
1 out of 1 points
Which of the following composes the majority of the epidermis?
Melanocytes
Keratinocytes
Basal cells
Osteocytes
• Question 13
1 out of 1 points
A bursa can reduce the friction of a tendon rubbing over a bone.
True
False
• Question 14
1 out of 1 points
Which statement is true regarding muscles?
The antagonist muscle or muscle group opposes a movement of a particular muscle or muscle group
A sprain is damage to a muscle or its tendon
The insertion point of a muscle is attached to the fixed bone during joint motion
All muscles have multiple origin points
• Question 15
1 out of 1 points
Aerobic respiration creates lactic acid as a byproduct but produces far more ATP than anaerobic respiration.
True
False
• Question 16
1 out of 1 points
Which statement is true regarding the skeletal system?
Compact bone of flat bones in adults is commonly filled with red bone marrow
External stresses placed on bone (such as exercise) will decrease the bone matrix density
Osteocytes are “connected” to one another via canaliculi
Osteoclasts secrete collagen fibers to increase bone density
• Question 17
1 out of 1 points
Which of the following protein molecules provides the binding site for the myosin heads?
Tropomyosin
Actin
Troponin
Myofilament
• Question 18
1 out of 1 points
Which of the following is found in the dermis layer of skin?
Subcutaneous fat
Elastic fibers
Granulosum layer
Melanin
• Question 19
1 out of 1 points
Which statement is true of articulations (joints)?
Cartilaginous joints are freely moveable
Cranial bone sutures are classified as fibrous joints
Bursas assist cartilaginous joints function
Tendons are essential to the stabilization of suture joints
• Question 20
1 out of 1 points
The process of detaching the thick filament from the thin filament during muscle relaxation requires ATP.
True
False
• Question 21
0 out of 1 points
Which choice is true regarding myoglobin?
Found in fast oxidative muscle fibers
It is a molecule that can store oxygen molecules within the muscle cell
It causes muscle cells to have a white color/appearance
It is a molecule that can store glycogen to be used to make ATP
• Question 22
1 out of 1 points
Which of the following statements is true of a synovial joint?
The synovial joint is stabilized by bursae
The joint cavity space tends to stay the same through life even with trauma
The bursae produce synovial fluid
Synovial fluid lubricates the joint and prevents excessive wear on the joints
• Question 23
1 out of 1 points
This type of tissue is exposed to external environments, lines hollow organs such as the stomach and bladder, and plays an integral role in the epidermis.
Nervous tissue
Muscular tissue
Connective tissue
Epithelial tissue
• Question 24
1 out of 1 points
A strain occurs when there is damage to:
Ligaments
Tendons
Synovial sheaths
Articular cartilage
• Question 25
1 out of 1 points
Which statement is true of articulations (joints)?
The shoulder joint is mainly stabilized by the trapezius and pectoral muscles
The glenohumeral joint contains mensci to help minimize wear and tear on the joint surfaces
Damage done to joints by osteoarthritis is easily reversible
The ends of bones within a synovial joint are all covered with articular cartilage
• Question 26
1 out of 1 points
DNA is stored in which cellular organelle?
Gogli apparatus
Smooth endoplasmic reticulum
Mitochondria
Nucleus
• Question 27
1 out of 1 points
Which statement is true of the epiphyseal plates of bones?
Found in bones of adults and children
Allow for longitudinal bone growth to occur
Produce the blood cells for the skeletal system
Largely composed of collagen and elastic fibers
• Question 28
1 out of 1 points
Hematopoiesis is a primary function of the muscular system.
True
False
• Question 29
1 out of 1 points
Which choice best describes the function of the Haversian (central) canals within bone?
To provide nutrients to the bone cells
To provide protection to the bone cells
To reduce weight of bone tissue
To produce new elastic fibers within bone
• Question 30
1 out of 1 points
Increasing intensity of contractions during labor is an example of negative feedback.
True
False
• Question 31
1 out of 1 points
The arrangement of the fascicles in a muscle influences the direction a muscle will contract.
True
False
• Question 32
1 out of 1 points
Enzymes are used to speed up chemical reactions within the body.
True
False
• Question 33
1 out of 1 points
Skin cancer originates in the dermis of the skin.
True
False
• Question 34
1 out of 1 points
A ligament connects a muscle to a bone, while a tendon stabilizes a joint by connecting or joining one bone to another.
True
False
• Question 35
1 out of 1 points
Which of the following is a function of the integument system?
Excretion of fat cells
Assist in the production of vitamin C
Assist in regulation of the body temperature
Assist in the protection of calcium loss within the body
• Question 36
1 out of 1 points
Which of the choices is true regarding muscle contraction?
A nerve impulse (action potential) is required to have sodium and potassium released into the synaptic cleft
T-tubules help transmit the action potential deep into muscle cell to stimulate the release of calcium from the endoplasmic reticulum
ATP is needed for the power stroke to occur
The myosin head binds to the troponin and tropomyosin proteins of the thin filament
• Question 41
1 out of 1 points
This type of gland secretes an oily secretion that helps lubricate and keeps the skin and hair from becoming dry and brittle?
Eccrine gland
Ceruminous gland
Sebaceous gland
Apocrine gland
• Question 42
1 out of 1 points
Autosomal recessive traits and disorders are typically expressed in each generation.
True
False
• Question 43
1 out of 1 points
Which statement is true regarding articulations?
The cartilage found between two vertebrae is elastic cartilage
The wrist joint is classified as a synovial joint
The hip joint contains a meniscus which helps stabilizes the joint
The knee joint has six main ligaments that stabilize it
• Question 44
1 out of 1 points
Which statement is true regarding the hip?
It is less stable than the glenohumeral (shoulder) joint
It has a ligament that connects the femoral head into the acetabulum
It is one of the most commonly dislocated joints in the body
It is considered a syndesmosis joint
Melanoma
• Question 50
1 out of 1 points
The majority of joints within the body are classified as:
Cartilaginous
Fibrous
Synovial
Synarthroses
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Rating:
/5
Solution: rasmussen MA278/BSC2346 Module 5 midterm 2019 Graded