Axons can be extremely long and winding. What structural property allows them to maintain the necessary mechanical strength? (Check all that apply)       ☐tensile strength of the microtubules       ☐collagen fibers       ☐tensile strength of actin microfilaments       ☐myelin sheath       ☐perineurium

Q: Which of the following families of actin-binding proteins promote actin filament polymerization?…

A: Actin filaments are made up of a long spiral chain of similar actin proteins. Actin filaments, like…

Q: Assume you touched a hot BBQ with your finger. Contraction of the biceps muscle causes flexion…

A: Neurons and nerve glial cells form a large network in the body known as the nervous system that…

Q: O Axon terminal O Dendrite O Neuroglia O Target cell O Synaptic cleft

A: This shows space between two neurons.  It is known as Synaptic cleft  The correct option would be…

Q: Strabismus is an eye condition in which one eye is not aligned correctly (see pictures below). One…

A: Strabismus, a condition characterized by misalignment of the eyes, results from an imbalance in the…

Q: Therefore, a muscle cell at rest is said to be __________________ and has membrane potential.

A: An abrupt, quick, transient, and propagating shift in the resting membrane potential is referred to…

Q: Actin filaments in microvilli require the help of myosin so that they can associate with the…

A: The cytoskeleton is defined as a complex, dynamic network of interconnecting protein filaments which…

Q: Botox  has become popular for reducing wrinkles.  It is a dilute solution of a toxin which inhibits…

A: Botox injections block specific chemical signals from nerves, for the most part signals prompt…

Q: The picture below shows One nerve One muscle cell ten neurons ten muscle cells

A: Human beings are a complex species consisting of trillions of cells, each with its own form and…

Q: Action potential ente from adjacent cell. 1 Ca2+ 2 K* 3 Na* Ca2+ ЕCF ATP NCX ICF 3 Na* RyR Ca2+…

A: The muscle contraction of myocardial cells is activated with the help of specific stimulus that…

Q: Glia—are they more than glue? The recent spotlight on glial cell function has revealed numerous ways…

A: Glia is also called as neuroglia, non-neuronal cells or glial cells which are present in the central…

Q: ted to design a drug that interfered specifically with skeletal muscle, without effecting cardiac or…

A: Drug design regularly alluded to as a rational medication plan or just reasonable plan is the…

Q: Write the difference between Actin and Myosin.

A: The muscles are made up of proteins called as actin and myosin. These two proteins are involved in…

Q: Which of the following is the most important contributor to the difference between the resting…

A: The action potential is a sequence of variations in the voltage across the membrane. This action…

Q: The specialized post-synaptic portion of a neuromuscular junction is called a pick one: motor…

A: Individual motor units, each of which contains a single motor neuron and all the muscle fibers it…

Q: A synaptic vesicle has a diameter of 40 nm. The concentration of a neurotransmitter inside this…

A: The nerve cells of the nervous system are called neurons, Inside these nerve cells there lies a…

Q: As mentioned in class, one additional major use of ATP in skeletal muscle (besides powering the…

A: Assumptions:The volume of a single sarcomere is roughly cylindrical.The average diameter of a…

Q: Identify the structures within this sarcomere. A band M line Z line Myosin H zone I band Actin H |||

A: MUSCLE CONTRACTION-When you perform an activity, your muscles are tightened, lengthened, or…

Q: B. THE NEURON 1. The following roots and suffixes are used to Match each root or suffix with its…

A: Dendrite:branch(like that of a tree)Axon:axis(line)Soma:bodylemma:peel(covering)

Q: Describe the role of a presynaptic terminal, synaptic vesicles,synaptic cleft, and acetylcholine in…

A: The nervous system consists of the brain, spinal cord and neurons. The parts of a neuron are…

Q: Match the labeled structure with its name. (not all choices will be used) Sarcomere [ Choose ]…

A: The plasma membrane of the muscle fibers is known as the sarcolemma. Sarcolemma covers the cytoplasm…

Q: A fellow classmate is planning to study endocytosis at neuronal synapses for their senior thesis. He…

A: Endocytosis is described as a the process in which the cell membrane's flexibility helps them in…

Q: Discuss the following statement: “The basal lam-ina of muscle fibers serves as a molecular bulletin…

A: Muscle fibres are the contractile cells which are present in the muscles. These are responsible for…

Q: Skeletal Muscle Smooth Muscle Cardiac Muscle Striated? [a] [b] [c] [f] # of Cells? [d] [e] Shape?…

A: Tissue comprises of structurally and functionally similar cells. It is a level of organization in…

Q: What do you mean by neurofilaments?

A: Cytoskeleton proteins are composed of cytoskeleton, flagella, or cilia. These are generally polymers…

Q: At what time (in milliseconds) is the inside of the neuron the most positive and why?  Explain why…

A: The graph represents action potential in neuron.

Q: The motor end plate is extensively folded to allow for greater number of what structure? Terminal…

A: Motor end plates are called Neuromuscular junctions, are specialized chemical synapses formed at the…

Q: Skeletal muscle is visually distinctive (viewed in longitudinal section) in that it appears as long,…

A: In this answer, I will describe the appearance of striations in skeletal muscle fibers when viewed…

Q: In cells, actin filaments form bundles or networks. How do cells form such structures, and what…

A: The soft tissue-like structure found in the majority of the animals including human beings is known…

Q: The ability of myosin to walk along an actin filament may be observed with the aid of an…

A: Myosin is the motor protein, actin filaments are the tracks along which myosin moves, and ATP is the…

Q: Describe the following Alpha gamma coactivation Golgi tendon apparatus

A: Muscle tissue plays a vital role in providing body movements through the contraction of muscles.…

Q: Which of the following actin crosslinking proteins organizes actin microfilaments in parallel files?…

A: Introduction  Actin strands are linked or crosslinked together by proteins called actin crosslinking…

Q: The resting membrane potential in neurons is described as an electrochemical gradient. You have…

A: Resting membrane potential (RMP) is defined ss the potential inside the cell when the cell is in…

Q: Neurofilament proteins assemble into long, intermediate filaments , found in abundance running along…

A: Neurofilaments (NFs) are heteropolymers made up of four subunits (NF-L [neurofilament light], NF-M…

Q: • Myosin pulls the actin strands • An action potential arrives at the neuromuscular junction •…

A: The muscles in the body in association with the skeleton system provide us with the desired…

Q: Cardiac and skeletal muscle are both “striated” types of muscle and yet they have very distinct…

A: The skeletal muscles are a part of muscle tissue in the body. They are attached to the bones by the…

Q: Skeletal muscle is described as striated. What are the lighter, thinner stripes noted under the…

A: The lighter, thinner stripes noted under the microscope are actin. Under a microscope, the thick and…

Q: An antibody has been isolated that binds to F-actin but not to G-actin. Whatstructural feature(s) of…

A: F-actin - Actin is a family of globular multi-functional proteins that form microfilaments. It is…

Q: age-gated transient Ca++ channels (F) funny channels

A: In the graph the changes in the membrane potential has been mentioned that is the potential changes…

Q: There are at least 20 different types of myosin. What properties do all types share, and what makes…

A: Introduction Myosins are a group of motor proteins that play a key role in muscle contraction and a…

Q: What is meant by the term "Critical concentration" with respect to actin filaments?

A: The microfilament or actin filament is made up of monomeric globular actin protein or G-actin. Actin…

Q: First, explain how resting membrane potential is established in terms of ion concentration and…

A: The variation in the electric potential of the interior cellular component and extracellular matrix…

Q: When nerve cells contact each other, they form adherens junctions (AJs) at the point of contact. The…

A: Nerve cells transmit signals from one to another. When they do this, adheren junctions are formed…

Q: Why is the proportion of actin within filaments in cells smaller than would be predicted by in vitro…

A: Actin filaments are polarised polymers of actin subunits, with one filament end polymerizing and…

Q: sarcolemma Ex 201 ion channel Nas myosin cross bridge Nat acetylcholine axon axon sarcolemma ion…

A: Ans. The neuromuscular junction (NMJ), a synaptic connection, is created when the terminal ends of a…

Q: Why is myosin II the only myosin capable of producing contractile force?

A: Introduction Myosins are a group of motor proteins that play a key role in muscle contraction and a…

Q: refers to the ability of neurons to produce action potentials that travel from axon hillock up…

A: The correct option is a   Excitability A neuron is a cell that specialises in excitability and…