Bio 141 pvcc - Study guides, Class notes & Summaries

PVCC BIO 141 Bones Lecture Exam Questions and Answers Hydroxyapatite - Answer-Hardy crystals consisting of calcium and phosphate that form the bone matrix. -Work with osteoid Osteocytes - Answer-mature bone cells (osteoblasts) in lacunae that no longer divide -Maintain bone matrix and act as stress or strain sensory -Respond to mechanical stimuli such as increased force on bone or weightlessness -Communicate information to osteoblasts and osteoclasts (cells that destroy bones) so bon...

PVCC Bio 141 Exam 4 Questions with Answers White and gray rami communicants contain ______- system neurons only. - Answer-sympathetic Sympathetic fibers emerge from _______- and synapse in the superior cervical ganglion - Answer-T1 to T4 These fibers innervate _____ and _________ of the head; stimulate _______ muscles of the iris; inhibit ______ and _______ glands; innervate smooth muscle of the ___________ and branch to the _______ - Answer-skin, blood vessels, dilator, nasal, salivary,...

PVCC BIO 141 Integumentary System – Lecture Questions with Answers Squamous Cell Carcinoma - Answer--Second most common -Arises from keratinocytes from stratum spinosum -Metastasize (spread) -irregular pink ulcer w/ raised edge -Managed by surgical removal -Prognosis good - if treated early Malignant Melanoma - Answer--Will kill you -Sometimes hidden (most dangerous!) -Cancer of the melanocytes (ie moles) -Metastasize (spread) early on -Early detection is very important skin c...

Bio 141 PVCC Lecture Digestion Test Questions and Answers Swallowing center - Answer-pair of nuclei in medulla oblongata that coordinates swallowing Three phases of deglutition - Answer-Oral phase, Pharyngeal phase, Esophageal phase Oral phase - Answer-The tongue forms a food bolus and pushes it into the laryngopharynx Pharyngeal phase - Answer-The palate, tongue, vocal cords, & epiglottis block the oral/nasal cavities and airway while pharyngeal constrictors push the bolus into eso...

Bio 141 PVCC Lecture Digestion Questions with Answers Pharyngeal phase - Answer-The palate, tongue, vocal cords, & epiglottis block the oral/nasal cavities and airway while pharyngeal constrictors push the bolus into esophagus rugae - Answer-the folds in the mucosa lining the stomach Gastric pits - Answer-depressions in gastric mucosa lined with simple columnar epithelium Mucous cells - Answer-secrete mucus •Predominate in cardiac and pyloric glands Regenerative (stem) cells - A...

What are the two arms of the ANS? - ️️parasympathetic division and sympathetic division The _______ division promotes maintenance functions and conserves energy - ️️parasympathetic What are some examples of these adjusments? - ️️adjust heart rate, blood pressure, and digestive processes How does the ANS operate? - ️️subconscious control What are some other names of the ANS? - ️️involuntary nervous system or general visceral nervous system What do both the ANS and SNS...

Run in three directioAscendingns• : up to higher centers (sensory inputs)• Descending: from brain to cord or lower cord levels (motor outputs)• Transverse: from one side to other (commissural fibers) - ️️Ascending Three openings connect fourth ventricle to __________________________ that surrounds brain - ️️subarachnoid space What part of the brain is the site of the conscious mind and is the superficial layer of gray matter? - ️️Cerebral cortex Adult brains have what fo...

The Eukaryotic cell's glycocalyx is - Mostly polysaccharide The lipid molecules that are the main component of cell membranes are - Phospholipids The numerous short hair-like projections that move things across the surface of cells are - cilia When atoms gain or lose electrons, they become negatively or positively charged. They are known as - ions What type of bonding is likely to occur between two water molecules? - hydrogen Substances that are water-loving are called - hydrophilic

The Eukaryotic cell's glycocalyx is - Mostly polysaccharide The lipid molecules that are the main component of cell membranes are - Phospholipids The numerous short hair-like projections that move things across the surface of cells are - cilia When atoms gain or lose electrons, they become negatively or positively charged. They are known as - ions What type of bonding is likely to occur between two water molecules? - hydrogen Substances that are water-loving are called - hydrophilic Fat...

The chin is (directional term) to the nose - inferior The thoracic cavity is (directional term) to the abdominopelvic cavity - superior The shoulder is (directional term) to the wrist - proximal The ankle is (directional term) to the knee - distal The skin is (directional term) to the muscle - superficial In your "shin" region, bone is (directional term) to the skin - deep The thoracic cavity is (directional term) to the vertebral canal - anterior The vertebral canal is (directional ter...