A&p tutorial 2014 Exam 2B



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A&P Tutorial 2014 Exam 2B
T/F
1) Joe just burned himself on a hot pot. A blister forms and the burn is painful. Joe's burn would best be described as a third-degree burn.
2) The hyponychium is commonly called the cuticle.
3) The reason that the nail bed appears pink is the presence of a large number of melanocytes in the underlying dermis.
4) The most dangerous skin cancer is cancer of the melanocytes.
5) The skin is not able to receive stimuli because the cells of the epidermis are not living and therefore there are no sensory receptors in the skin.
6) When an individual is exposed to extremely low air temperatures, the dermal blood vessels will dilate so that blood and heat will be dissipated.
7) Ceruminous glands are modified merocrine glands.
8) Sweat glands continuously produce small amounts of sweat, even in cooler temperatures.
Multiple Choice
9) Select the most correct statement concerning skin cancer.

A) Most tumors that arise on the skin are malignant.

B) Squamous cell carcinomas arise from the stratum corneum.

C) Basal cell carcinomas are the least common but most malignant.

D) Melanomas are rare but must be removed quickly to prevent them from metastasizing.
10) Acne is a disorder associated with ________.

A) sweat glands

B) sebaceous glands

C) Meibomian glands

D) ceruminous glands
11) Which of the following cutaneous receptors is specialized for the reception of touch or light pressure?

A) Meissner's corpuscles

B) Pacinian corpuscles

C) free nerve endings

D) Krause's end bulbs
12) Which of the following is a skin sensory receptor for touch?

A) Pacinian corpuscle

B) tactile corpuscle

C) Ruffini body

D) free nerve ending

13) The single most important risk for skin cancer is ________

A) race

B) genetics



C) use of farm chemicals

D) overexposure to UV radiation


14) Which glands produce ear wax?

A) Merocrine glands

B) Apocrine glands

C) Ceruminous glands

D) Eccrine Glands
15) Which type of skin cancer appears as a scaly reddened papule and tends to grow rapidly and metastasize?

A) Melanoma

B) Squamous cell carcinoma

C) Basal cell carcinoma

D) Adenoma

Match the following:
A) Spiral

B) Comminuted

C) Greenstick
16) An incomplete fracture or cracking of the bone without actual separation of the parts. Common in children.
17) Bone fragments into many pieces.
18) Common sports fracture resulting from a twisting force.

T/F


19) The term osteoid refers to the organic part of the matrix of compact bones.
20) Sixty-five percent of the mass of bone is a compound called hydroxyapatite.
21) All bones stop growing by the end of adolescence.
22) The hormone that is primarily involved in the control of bone remodeling is the parathyroid hormone.
23) Closure of the epiphyseal plate stops all bone growth.

Multiple Choice

24) What kind of tissue is the forerunner of long bones in the embryo?

A) elastic connective tissue

B) dense fibrous connective tissue

C) fibrocartilage

D) hyaline cartilage
25) What can a deficiency of growth hormone during bone formation cause?

A) inadequate calcification of bone

B) decreased osteoclast activity

C) decreased proliferation of the epiphyseal plate cartilage

D) increased osteoclast activity

26) Ossification of the ends of long bones ________.

A) is a characteristic of intramembranous bone formation

B) involves medullary cavity formation

C) is produced by secondary ossification centers

D) takes twice as long as diaphysis ossification

27) Which structure allows the diaphysis of the bone to increase in length until early childhood?

A) lacunae

B) Haversian system

C) epiphyseal plate

D) epiphyseal line
28) Which of the following is the single most important stimulus for epiphyseal plate activity during infancy and childhood?

A) parathyroid hormone

B) calcium

C) growth hormone

D) thyroid hormone

49) The resilience of bone is primarily due to which of the following?

A) amount of mineral salts in the bone

B) presence of osteoblasts in the bone

C) sacrificial bonds in or between collagen molecules

D) amount of mineral salt and protein in the bone

30) For intramembranous ossification to take place, which of the following is necessary?

A) A bone collar forms around the cartilage model.

B) An ossification center forms in the fibrous connective tissue.

C) The cartilage matrix begins to deteriorate.



D) A medullary cavity forms.


Match
31. inferior nasal concha

32. infraorbital foramen

33. sphenoid bone

34. parietal bone



35. supraorbital foramen

36. maxilla

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