BSC2346 2019 January Module 5 Midterm Quiz Latest

BSC2346 Human Anatomy and Physiology I

Module 05 Midterm Exam

Question 1

Wolff’s law of bone states that bone density is directly related to the dietary ingestion of calcium.

Answers:            

True

 False

Question 2

Which statement is true regarding osteoporosis?

Answers:            

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

Osmosis is the movement of random molecules from a low to high concentration across a selectively permeable membrane.

Answers:            

True

 False

Question 4

Acetylcholine molecules must bind to troponin in order for the muscle contraction process to occur.

Answers:            

True

 False

Question 5

Which statement is true of the glenohumeral (shoulder) joint?

Answers:            

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

A motor unit is composed of all the muscle fibers that one motor neuron innervates.

Answers:            

 True

False

Question 7

Which choice is true regarding bone tissue?

Answers:            

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

Parathyroid hormone will cause an increase activity in which of the following cells?

Answers:            

 Osteoclasts

Osteoblasts

Osteocytes

Osteogenic cells

Question 9

Which of the following choices contains ridges that are ultimately responsible for fingerprints?

Answers:            

Flexure lines

 Dermal papillae

Friction ridges

Reticular layer

Question 10

Which cellular organelle is responsible for the production of ATP?

Answers:            

 Mitochondria

Lysosome

Gogli

apparatus

Nucleus

Question 11

Which statement is true of muscular tissue and/or muscle contraction?

Answers:            

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

Which of the following composes the majority of the epidermis?

Answers:            

Melanocytes

 Keratinocytes

Basal cells

Osteocytes

Question 13

A bursa can reduce the friction of a tendon rubbing over a bone.

Answers:            

 True

False

Question 14

Which statement is true regarding muscles?

Answers:            

 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

Aerobic respiration creates lactic acid as a byproduct but produces far more ATP than anaerobic respiration.

Answers:            

True

 False

Question 16

Which statement is true regarding the skeletal system?

Answers:            

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

Which of the following protein molecules provides the binding site for the myosin heads?

Answers:            

Tropomyosin

 Actin

Troponin

Myofilament

Question 18

Which of the following is found in the dermis layer of skin?

Answers:            

Subcutaneous fat

 Elastic fibers

Granulosum layer

Melanin

Question 19

Which statement is true of articulations (joints)?

Answers:            

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

The process of detaching the thick filament from the thin filament during muscle relaxation requires ATP.           

Answers:            

 True

False

Question 21

Which choice is true regarding myoglobin?

Answers:            

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

Which of the following statements is true of a synovial joint?

Answers:            

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

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.

Answers:            

Nervous tissue

Muscular tissue

Connective tissue

 Epithelial tissue

Question 24

A strain occurs when there is damage to:

Answers:            

Ligaments

 Tendons

Synovial sheaths

Articular cartilage

Question 25

Which statement is true of articulations (joints)?

Answers:            

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

DNA is stored in which cellular organelle?

Answers:            

Gogli apparatus

Smooth endoplasmic reticulum

Mitochondria

 Nucleus

Question 27

Which statement is true of the epiphyseal plates of bones?

Answers:            

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

Hematopoiesis is a primary function of the muscular system.

Answers:            

True

 False

Question 29

Which choice best describes the function of the Haversian (central) canals within bone?

Answers:            

 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

Increasing intensity of contractions during labor is an example of negative feedback.

Selected Answer:           

 False

Answers:            

True

 False

Question 31

The arrangement of the fascicles in a muscle influences the direction a muscle will contract.

Answers:            

 True

False

Question 32

Enzymes are used to speed up chemical reactions within the body.

Answers:            

 True

False

Question 33

Skin cancer originates in the dermis of the skin.

Answers:            

True

 False

Question 34

A ligament connects a muscle to a bone, while a tendon stabilizes a joint by connecting or joining one bone to another.

Answers:            

True

 False

Question 35

Which of the following is a function of the integument system?

Answers:            

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

Which of the choices is true regarding muscle contraction?

Answers:            

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 37

Which bone cell is responsible for breaking down bone tissue?

Answers:            

Osteocyte

Osteoblast

Osteogenic

 Osteoclast

Question 38

The organic components of the extracellular matrix space include collagen fibers.

Answers:            

 True

False

Question 39

Which statement is true regarding synovial joints?

Answers:            

Every synovial joint cavity contains fibrocartilage

 The joint cavity is completely surrounded by an articular capsule

Elastic cartilage covers the epiphyseal ends of articulating bones

Every synovial joint has a meniscus

Question 40

Which statement is true regarding the epiphyseal plates?

Answers:            

They are completely ossified by 5-10 years of age

 They can be utilized to determine whether a bone is still growing longitudinally

Commonly found in the center of the metaphysis of long bones

It is a result of bone being converted into cartilage so the bone can grow

Question 41

 

 

                This type of gland secretes an oily secretion that helps lubricate and keeps the skin and hair from becoming dry and brittle?

Answers:            

Eccrine gland

Ceruminous gland

 Sebaceous gland

Apocrine gland

Question 42

 

 

                Autosomal recessive traits and disorders are typically expressed in each generation.

Selected Answer:           

 False

Answers:            

True

 False

Question 43

 

 

                Which statement is true regarding articulations?

Answers:            

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

Which statement is true regarding the hip?

Answers:            

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

Question 45

The last step in bone fracture repair is the formation of the fibrocartilaginous callus.

Answers:            

True

 False

Question 46

Which of the following muscles is considered a rotator cuff muscle?

Answers:            

 Subscapularis

Teres major

Pectoralis major

Levator scapula

Question 47

Which statement is true regarding osteoarthritis?

Answers:            

It commonly occurs in younger individuals

 Degenerative changes occur to the articular cartilage

The damage is usually reversible

It is an autoimmune disease

Question 48

Which statement best describes epimysium?

Answers:            

 It is a protective connective tissue covering around a entire muscle

It is a pathway for blood vessels to reach the muscle cells

It is a connective tissue covering a group muscle cells (fibers)

It is a connective tissue covering around an individual muscle cell (fiber)

Question 49

Which type of skin cancer has the highest fatality rate?

Answers:            

Basal cell carcinoma

Squamous cell carcinoma

Keratinoma

 Melanoma

Question 50

The majority of joints within the body are classified as:

Answers:            

Cartilaginous

Fibrous

 Synovial

Synarthroses