1. Which of the following forms a thick protective barrier that can keep bacteria from entering the body? 1.fibrous connective tissue 2.skeletal muscle 3.simple columnar epithelium 4.cartilage 5.stratified squamous epithelium 12345

2. Tendons connect bone to ________, while ligaments connect bone to ________. 1.bone, muscle 2.bone, organ 3.muscle, bone 4.muscle, organ 5.organ, bone 12345

3. Which tissue protects and cushions the joints between bones? 1.adipose tissue, a type of connective tissue 2.cartilage, a type of connective tissue 3.fibrous, irregular connective tissue 4.loose connective tissue 5.dense, regular connective tissue 12345

4. Which muscle type is classified as voluntary? 1.cardiac 2.skeletal 3.smooth 4.all of the choices 5.none of the choices 12345

5. Which type of neuron is correctly paired with its particular task? 1.interneurons, detect sensory signals arising within the body such as high blood pressure 2.motor neurons, integrate signals within the brain and spinal cord 3.sensory neurons, integrate signals within the brain and spinal cord 4.motor neurons, relay commands from the brain and spinal cord to muscle cells 5.sensory neurons, detect specific stimuli, such as light, heat, and pressure 12345

6. The skin is best considered a(an) ________ because it ________. 1.tissue, is formed from a group of similar cells working together in a common task 2.organ, consists of an epithelial epidermis and connective tissue dermis 3.organ system, consists of several organs interacting together in a common task 4.organ, is a structure containing at least three types of tissues 5.tissue, is constructed from stratified squamous epithelium 12345

7. An epithelium made up primarily of flattened cells is called ________. 1.columnar 2.cuboidal 3.transitional 4.squamous 5.glandular 12345

8. Irregular connective tissues are so named because ________. 1.their occurrence within organs is unpredictable 2.the fibers forming their matrix have no particular orientation 3.they are much less common than the regular connective tissues 4.they contain no cells at all 5.they contain elastin rather than collagen fibers 12345

9. Which system is correctly matched with its primary function? 1.circulatory, maintains the volume and composition of internal fluids 2.nervous, integrates short term and long term body responses 3.endocrine, detects external and internal stimuli, controls and coordinates responses 4.lymphatic, collects and returns fluid to circulatory system 5.respiratory, transports materials to and from cells 12345

10. Controversy surrounds the collection and use of embryonic stem cells. Why can't researchers simply harvest stem cells from adults? 1.adult stem cells are invariably damaged, usually as early as age 3 2.adults no longer have stem cells; all die shortly after birth 3.adults have fewer stem cells and those cells are not very versatile, forming only a few tissue types 4.adult stem cells are considered personal property of the donor, making their use legally complicated 5.adult stem cells have fewer remaining cell divisions because they are older when first collected 12345

11. What aspect of tanning is primarily responsible for creating shoe-leather skin? 1.abnormal growth of melanocytes 2.exposure to ultraviolet light which damages the collagen and elastin in skin 3.thermal energy of sunlight denatures the skin's repair enzymes 4.sunlight converts the oil produced by skin glands into free radicals 5.overproduction of hyper-reactive molecules like cholecalciferol damages the skin 12345

12. Tight junctions are found through the digestive system's epithelia where they prevent ________. 1.all of the choices 2.molecules from passing between cells and entering the body 3.bacteria from passing between cells and entering the body 4.stomach acids from leaking through the stomach wall 5.fluids within the body from leaking into the digestive system 12345

13. Which plane(s) of symmetry is(are) parallel to the long axis of an organism? 1.frontal plane only 2.transverse plane only 3.midsagittal and transverse 4.transverse and frontal 5.frontal and midsagittal 12345

14. Which of the following tissue types can currently be grown in the lab to replace damaged tissue in humans? 1.neural 2.cartilage 3.epidermis 4.cardiac muscle 5.blood 12345

15. In the rabbit, the transverse section produces anterior and posterior portions; what type of section produces anterior and posterior portions in the human? 1.a transverse section 2.a midsagittal section 3.a longitudinal section 4.a frontal section 5.a cross section 12345

16. Darker skin pigmentation may have an adaptive value in climates with high UV exposures because it can ________. 1.prevent folate breakdown while allowing vitamin D formation 2.prevent folate formation and prevent the breakdown of vitamin D 3.prevent disulfide bridge formation 4.prevent excessive calcium absorption 5.slow the spontaneous breakdown of keratin within the epidermis 12345

17. Mucus, saliva, earwax, milk, and digestive enzymes are considered exocrine products because ________. 1.each is delivered to a location outside the body 2.each is produced within an exocrine gland and transported by a duct to a free surface 3.each is transported by the blood from a production site to a target site 4.each is found within the skin of frogs 5.each shares a similar molecular structure derived from the sugar exocrinose 12345

18. Most skin cancers arise in the epidermis but do not leave it (metastasize) because they ________. 1.depend on the rich epidermal blood supply to survive 2.require a continuous input of UV light 3.can't cross the basement membrane 4.are washed upward by the numerous sweat glands in skin 5.are continuously rubbed away with surface epidermal cells 12345

19. To surgically remove a brain tumor, the surgeon must first open the ________ cavity. 1.abdominal 2.cranial 3.pelvic 4.spinal 5.thoracic 12345

20. Human cartilage recovers slowly from an injury because ________. 1.cartilage lacks a direct blood supply 2.the cartilaginous matrix is formed primarily from chondrin 3.cartilage is almost always found growing in association with bone 4.the fibroblasts which inhabit cartilage grown and divide slowly 5.all of the choices 12345