1) Name the two major protein myofibrils responsible for muscle contractions b.
ID: 3481472 • Letter: 1
Question
1) Name the two major protein myofibrils responsible for muscle contractions b. Which is/are the pathway(s) or supplies which generate energy (ATP) required for musele contraction 2) a. oxygen b. aerobic respiration c. glucose d. all the above 3) Name two muscle types which are NOT controlled voluntarily a. b. 4) Which skeletal muscle fiber(s) characterize(s) the contractile function of muscles a. sarcopheres b. centromeres c. sarcomeres d. all the above 5) Define concisely what ganglia is 6) Cranial nerves, spinal nerves and sensory receptors in the skin constitute the a. central nervous system b. peripheral nervous system c. none of the above d. a and b 7) Name two major neuroglia of the central nervous system (CNS) b. a. Name two major neuroglia of the peripheral nervous system (PNS)Explanation / Answer
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Q-1
Actin, when polymerized into filaments, forms the "ladder" along which the myosin filaments "climb" to generate motion
Myosin is responsible for force generation. It is composed of a globular head with both ATP and actin binding sites, and a long tail involved in its polymerization into myosin filaments.
Q-2
Answer is all the above
Q-3
Answer is smooth and cardiac muscle
Muscles that are under your conscious control are called voluntary muscles. Muscles that are not under your conscious control are called involuntary muscles.
Muscle tissue is one of the four types of tissue found in animals. There are three different types of muscle in the body
Q-4
Answer – C
Muscle fibers are in turn composed of myofibrils. The myofibrils are composed of actin and myosin filaments, repeated in units called sarcomeres, which are the basic functional units of the muscle fiber. The sarcomere is responsible for the striated appearance of skeletal muscle, and forms the basic machinery necessary for muscle contraction.
Q-5
Gangalia: a structure containing a number of nerve cell bodies, typically linked by synapses, and often forming a swelling on a nerve fibre.
Ganglia are primarily made up of somata and dendritic structures which are bundled or connected. Ganglia often interconnect with other ganglia to form a complex system of ganglia known as a plexus. Ganglia provide relay points and intermediary connections between different neurological structures in the body, such as the peripheral and central nervous systems.
Q-6
Answer- B
The nervous system is divided into the
The PNS consists of
The CNS consists of the
The peripheral nervous system is subdivided into the
The sensory-somatic system consists of
The Autonomic Nervous System:
The autonomic nervous system consists of sensory neurons and motor neurons that run between the central nervous system (especially the hypothalamus and medulla oblongata) and various internal organs such as the:
It is responsible for monitoring conditions in the internal environment and bringing about appropriate changes in them. The contraction of both smooth muscle and cardiac muscle is controlled by motor neurons of the autonomic system.
Q-7
Neuroglia of the CNS
Neuroglia in the CNS include astrocytes, microglial cells, ependymal cells, and oligodendrocytes. In the human brain, it is estimated that the total number of glia roughly equals the number of neurons, although the proportions vary in different brain areas.
Q-8
Neuroglia of the PNS:
Neuroglia in the PNS include Schwann cells and satellite cells.
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