Which of the following is a function of epithelial tissue?

The study of tissues is a. cytology b. histology c. molecular biology d. microbiology e. surface anatomy 2. In a negative feedback mechanism, the response of the effect or a. reverses the original stimulus b. enhances the original stimulus c. has no effect on the original stimulus d. is usually damaging to the body e. creates a cycle that leads away from homeostasis 3. Covalent bonds form when a. atomic nuclei fuse b. molecules become ionized c. neutrons are transferred from one atom to another d. protons are lost from atoms e. electrons are shared between two atoms 4. Reactions that use water to split molecules apart are called _______ reactions. a. dehydration b. synthesis c. hydrolysis d. reversible e. oxidation 5. Proteins a. are the body’s source of immediate energy b. are the building blocks of nucleotides c. provide much of the structure of body cells and tissues d. contain the genetic information of the cell e. insulate and cushion the body 6. The plasma membrane a. separates the nucleus from the rest of the cell b. is a rigid protein membrane c. is not permeable d. has a single layer of phospholipids e. regulates movement of materials into and out of the cell 7. Channel proteins a. are binding sites for other molecules b. utilize the G protein complex to function c. are found only on endoplasmic reticulum d. allow cells to recognize one another e. provide a “door” through which extracellular molecules can enter the cell 8. Which of the following is a function of epithelial tissue? a. conduction of action potentials b. secretion and absorption of molecules c. support of other tissue types d. contraction e. shock absorption 9. Adipose tissue a. functions as an insulator and a site of energy storage b. exists in three forms: yellow, red, and brown c. contains large amounts of extracellular matrix d. is composed of relatively small cells e. does not contain lipids 10. Skin color is the result of the a. quantity of melanin in the skin b. number of keratinocytes in the skin c. amount of fat in the hypodermis d. thickness of the stratum basale e. number of melanocytes in the skin 11. What does structure “B” represent on the diagram? a. hair follicle b. arrector pili c. dermis d. hypodermis e. sebaceous gland 12. When blood calcium levels are low a. osteoclast activity increases b. calcitonin secretion increases c. calcium absorption is reduced d. bones produce more bone tissue e. osteoblast activity increases 13. What does structure “A” represent on the bone diagram? a. cancellous bone b. Diaphysis c. epiphyseal lines d. articular cartilage e. epiphysis 14. What does structure “A” represent? a. frontal bone b. occipital bone c. parietal bone d. sphenoid bone e. temporal bone 15. The figure illustrates bones of the right upper limb. What does “A” represent? a. radius b. carpals c. phalanges d. metacarpals e. ulna 16. The figure illustrates bones of the right lower limb. What does “C” represent? a. femur b. fibula c. tarsals d. tibia e. patella 17. The joint between the head of the radius and the proximal end of the ulna is a _____ joint. a. plane b. saddle c. hinge d. pivot e. ball and socket 18. What does structure “A” represent on the diagram? a. tendon b. articular cartilage c. bursa d. fibrous capsule e. synovial membrane 19. Which of the following is composed of myosin molecules? a. thick myofilaments b. I Bands c. Z disks d. Sarcolemma e. tropomyosin 20. What does “B” represent on the diagram? a. threshold b. depolarization c. depolarization phase of action potential d. repolarization phase of action potential 21. The flexion of the elbow represents a a. class I lever system b. class II lever system c. class III lever system d. class IV lever system e. non-lever system 22. Label muscle “A” on the diagram. a. orbicularis oculi b. temporalis c. trapezius d. sternocleidomastoid e. masseter 23. What does “A” represent? a. coracobrachialis b. deltoid c. pectoralis major d. biceps brachii e. serratus anterior 24. The central nervous system includes the a. ganglia b. spinal cord c. spinal nerves d. cranial nerves e. sensory receptors 25. Identify structure “A” on the neuron. a. Schwann cell b. Node of Ranvier c. neuron cell body (soma) d. dendrites e. axon 26. The figure is a process figure of the chemical synapse. What does “C” represent? a. postsynaptic membrane b. synaptic cleft c. synaptic vesicle d. voltage-gated calcium channel e. presynaptic terminal 27. Which of the following combinations indicates the correct distribution of spinal nerve pairs? a. 7 cervical – 12 thoracic – 6 lumbar – 5 sacral – 1 coccygeal b. 7 cervical – 12 thoracic – 5 lumbar – 6 sacral – 1 coccygeal c. 8 cervical – 12 thoracic – 6 lumbar – 4 sacral – 1 coccygeal d. 8 cervical – 12 thoracic – 5 lumbar – 5 sacral – 1 coccygeal e. 7 cervical – 13 thoracic – 6 lumbar – 5 sacral – 1 coccygeal 28. Label component “A” on the reflex arc. a. sensory receptor b. effector organ c. sensory neuron d. motor neuron e. interneuron 29. A small lesion in the brainstem which resulted in a rapid heart rate, intense vasoconstriction, and elevated blood pressure would probably be located in the a. medulla oblongata. b. Pons c. Cerebellum d. Hypothalamus e. cerebrum