The resonating system is located in the pharynx, oral cavity, and nasal cavities. The vocal tract is comprised of resonators which give a personal quality to the voice, and the modifiers or articulators which form sound into voiced sounds. There are three different cartilages used in our larynx which are the thyroid, cricoid, and arytenoid. The thyroid cartilage forms the front portion of the larynx; the most forward part comprises the "Adam's apple". The vocal folds attach just below the Adam's apple, and the thyroid cartilage also houses the vocal folds.
Polycythemia is an increase in red blood cells, which would increase the viscosity and decrease flow. ACTIVITY 3 Studying the Effect of Blood Vessel Length on Blood Flow Rate 1. Which is more likely to occur, a change in blood vessel radius or a change in blood vessel length? Explain why. Increase in blood vessel radius is more likely to occur.
Based on changes in amplitude and frequency of sEMG, did motor unit activation increase, decrease, or stay the same with increasing muscle load? The motor unit activation increased with muscle load based on the changes in amplitude and frequency of sEMG because the motor units which are activated are contracting at a greater frequency. 8. Do you think that the force of isometric contraction increased, decreased, or stayed the same as muscle load increased? The force of the isometric contraction increased as the muscle load increased.
Name and describe the major structures of the middle ear. 9. The middle off the ear is also known as the ear drum. It connects to three tiny bones, malleus, incus, and the stapes that transfers waves to the oval window. 10.
400mV 2. What is the maximum force generated at the threshold stimulus? 0.084gf 3. How does increasing voltage above threshold stimulus affect force development? When the stimulas voltage is increased an increase within the entire muscle begins to take place.
Longitudinal wave The vibrations of the object set particles in the surrounding medium in vibrational motion, thus transporting energy through the medium. For a sound wave traveling through air, the vibrations of the particles are best described as longitudinal. Longitudinal waves are waves in which the motion of the individual particles of the medium is in a direction that is parallel to the direction of energy transport. Sound waves in air (and any fluid medium) are longitudinal waves because particles of the medium through which the sound is transported vibrate parallel to the direction that the sound wave moves. As the vibrating string moves in the forward direction, it begins to push upon surrounding air molecules, moving them to the right towards their nearest neighbor.
Often the midbrains, pons and medulla are referred together as brainstem. The telencephalon comprises of three elements which are the cortex, limbic system and the basal ganglia whilst the Diencephalon consists of the thalamus and hypothalamus. THE FOREBRAIN THE CEREBRAL CORTEX The cerebral cortex is a thin mantle of gray matter covering the surface of each cerebral hemisphere. The most notable features of the telencephalon are the two large and roughly symmetrical hemispheres’ which are in fact separate functional systems interconnected by major fibre pathways called the cerebral commissures. The principal commissures is the corpus callosum which according to Nearve (2008) literally means “hard body” and this wrist –thick bundle of fibres connects the corresponding regions of
Thermal runaway reaction occurs when the heat generated by a reaction goes beyond the heat removal caused by the available cooling capacity. Heat is accumulated leading to a gradual rise in the temperature of the reaction mass; this causes an increase to the rate of reaction and increases the speed of rate of heat generation. [1] Why are thermal runaway reactions dangerous on industrial scale? Thermal runaway reactions are always said to be dangerous on an industrial scale since the reactions go faster in an industry where they tend to reach higher temperatures. As you would already know that exothermic reactions tend to release quite a large amount of heat, so when the reaction mixture gets very warm, a very hot exothermic reaction begins.
(400mV) 2. What is the maximum force generated at the threshold stimulus? 0.093 (gf) 3. How does increasing voltage above threshold stimulus affect force development? By increasing the voltage above threshold stimulus the force
c) How does one nerve cell communicate with another? - Nerve cells communicate with one another through neurotransmitters. 2. a) Explain what neurotransmitters are? - Neurotransmitters are chemical messengers that cross the synaptic gaps between neurons. When released by the sending neuron, neurotransmitters travel across the synapse and bind to receptor sites on the receiving neuron, thereby influencing where that neuron will generate a neural impulse.