FREE Anatomy and Physiology Questions and Answers
Despite not serving as a structural link like bone or cartilage, why is blood still regarded as a connective tissue?
Plasma, the extracellular fluid that makes up blood, contains suspended cells. Proteins, minerals, hormones, and other dissolved compounds are also present in plasma, which is primarily composed of water. Red blood cells, white blood cells, and platelets are among the cells found in blood. White blood cells combat infections and diseases, platelets aid in blood clotting, and red blood cells deliver oxygen and carbon dioxide.
Which of the following is NOT an epithelial tissue function?
An epithelial tissue does not have the ability to deliver pain signals to the brain and spinal cord. Nervous tissue, which is made up of neurons and glial cells, carries out this job. Specialized cells called neurons are able to produce and carry electrical impulses through their axons. The supportive cells known as glial cells insulate, safeguard, and feed neurons.
We refer to this as __ when an output from a process prompts the creation of a substance that produced the initial output.
A process known as positive feedback occurs when an output from a system prompts the synthesis of a substance that produced the initial output. For instance, when blood clots, the platelets emit a chemical that draws other platelets to the damage site, which promotes additional clotting. Another illustration is a mother who is lactating; the baby sucking motivates the mother to produce more milk, which in turn stimulates more sucking.
The site of substrate binding is referred to as the
The active site is the place where substrates bind. The portion of an enzyme's surface known as the active site has a particular shape and chemical make-up that enables it to bind to a particular substrate molecule. The enzyme can more easily catalyze the chemical reaction when the substrate is bound to the active site1. Several amino acids that are typically found in distinct regions of the enzyme's basic structure but are brought together by the folding of the protein into its three-dimensional shape make up the active site.
Which of the following is an example of swatting a mosquito?
The somatic nervous system is exemplified by the act of swatting a mosquito. 1. Skeletal muscle reflexes and voluntary movements are controlled by the somatic nervous system. 1. Swallowing a mosquito is a voluntary process that is carried out by your skeletal muscles. 2.
The ___ of a neuron is the area that receives the impulse.
The dendrite is the portion of a neuron that receives the impulse. A neuron's (nerve cell) dendrites are its extracellular extensions that receive signals (information) from other neurons1. Chemical signals and electric impulses, or electrochemical signals, are used to transmit information from one neuron to another1. The information is typically transferred from one neuron to the next at the synapse, which is where the two neurons exchange information through chemical signals after it has first been received at the dendrites through chemical signals, traveled to the cell body (soma), and then continued along the neuronal axon as electric impulses.
High tensile strength can be found in:
A form of connective tissue called fibrous connective tissue has a high tensile strength, which means it can withstand forces that would cause it to stretch, pull, or tear. Collagen fibers that are strong but flexible and are arranged in parallel bundles or asymmetrical networks make up fibrous connective tissue. A protein called collagen gives the tissue strength and suppleness.
Which group of functional categories can be consistently found in sugars?
Since sugars are carbohydrates with the general formula (text CH 2text O) n (CH2O)n, where n is the number of carbon atoms, hydroxyl groups are always present in sugars. This indicates that one water molecule (text H 2text O H2O) is joined to each carbon atom in a sugar molecule. A hydroxyl group (text OH OH) and a hydrogen atom (text H H), which are subsequently joined to various carbon atoms in the sugar molecule, can be created from the water molecule. As a result, sugars have at least one hydroxyl group and frequently more than one for every carbon atom.
The following statement is FALSE.
Your eyes cannot move around with the aid of the accessory nerve. The third, fourth, and sixth cranial nerves, respectively, the oculomotor, trochlear, and abducens nerves, carry out that function. The sternocleidomastoid and trapezius muscles of the neck and back are innervated by the accessory nerve, which is the eleventh cranial nerve. The soft palate, larynx, and throat muscles are supplied by the cranial component of the accessory nerve, which connects to the vagus nerve, and the spinal component, which innervates the sternocleidomastoid and trapezius muscles.
Before he begins his tennis competition preparation, Justin wants to consume foods that are high in energy. What cuisine will provide him with the greatest energy per pound out of the following?
Fat will give Justin the most energy per pound because fat has the highest energy density of the three macronutrients: fat, protein, and carbohydrates. Energy density is the amount of energy (calories) per unit of weight (gram or ounce) of a food. Fat has an energy density of 9 calories per gram, while protein and carbohydrates have an energy density of 4 calories per gram12. This means that fat provides more than twice as much energy as protein or carbohydrates for the same amount of weight.
Why is the presence of interneurons required?
Interneurons are required to help afferent and efferent neurons carry out their roles as message-sending cells. Efferent neurons are motor neurons, whereas afferent neurons are sensory neurons that provide messages from the central nervous system (CNS) to the peripheral nervous system (PNS). Unlike direct motor neurons or sensory neurons, interneurons are neurons that connect to different parts of the brain1. Interneurons are the hubs of neural networks that allow communication between sensory or motor neurons and the central nervous system (CNS). They are essential for the adult mammalian brain's neurogenesis, neuronal oscillations, and reflexes.