Exam 1
Cephalad or Cranial
Name all of the layers of the skin from deep to superficial starting at the hypodermis.
hypodermis, reticular layer, papillary layer, stratum Basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum
What is the difference between a motor unit and a neuromuscular junction?
Motor Unit: the motor neuron and all its muscle fibers it supplies
Neuromuscular Junction: the axon terminal and it muscle fiber
What is the lV nerve?
Trochlear
True or False: Nerves can always regenerate like the cell in our body.
False
What are the four types of tissue? Name a characteristic the makes it unique from the others?
Epithelial
Connective
Nervous
Muscle
Which gland is the most abundant? Which are normally always activated from birth.
Eccrine sweat glands
The simplest contraction is called a?
Muscle twitch
Explain the All-or-None principle.
Answer may vary
How does the myelination process differ in the CNS and PNS?
CNS-oligodendrocytes
PNS-Schwann Cells
What do peroxisomes do?
The get rid of free radicals, by detoxifying substances and neutralizes them
What is the difference between interstitial and appositional growth?
Appositional Growth: grows in width
Interstitial Growth: Grows in length
What is the difference between efferent and afferent pathways?
Afferent pathway is going towards the brain (CNS)
Efferent pathway is leave the brain (CNS)
How do we classify nerves?
Sensory
Motor
Mixed
Freshwater is a precious natural resource in Florida and it is said that supplies are dwindling. Desalinizing (removing salt from) ocean water has been recommended as a solution to the problem. Why shouldn't we drink saltwater?
What is the only fluid tissue?
Blood
This thing covers the outside of the compact bone
Periosteum
Is everything in our body consciously controlled?
No
What are ventral roots?
They contain motor (efferent) fibers from ventral horn motor neurons that innervate skeletal muscle
What is occurring during depolarization, repolarization, and hyperpolarization?
Answers may vary
The ___________ is the power house of the cell
Mitochondria
How do we classify joints, and what type of joints belong in each classification group?
Functional: Synarthroses, Amphiarthrosis, Diarthrosis
Structure: Fibrous, Cartilaginous, Synovial
How do neurons communicate with one another?
Answers may vary
This type of receptor detects light energy?
photoreceptor
In adults, over 90% of all cancers are either adenomas (adenocarcinomas) or carcinomas. (See Related Clinical Terms for this chapter.) In fact, cancers of the skin, lung, colon, breast, and prostate are all in these categories. Which one of the four basic tissue types gives rise to most cancers? Why do you think this is so?
Epithelial