Diagram a sarcomere, showing the basic organization ofthin (actin) and thick (myosin) filaments. Indicate on yourdiagram the regions where myosin cross-bridges formwith actin.

Q: List the five layers of epidermis from deep to superficial.What are the distinctive features of each...

A:  The cuticle is that the outmost of the 3 layers that structure the skin, the inner layers being the...

Q: Can you help me the name of the brain  of the labels in the picture?

A: Note: Since you have asked the labelled parts, the parts labelled as E, III and 6 are explained.  Th...

Q: Can you help me the name of the brain's blood vessel of the labels in the picture?

A: The brain is more complex and its cell structure is beyond than that of a muscle. It doesn’t contrac...

Q: 54

A: The ovarian cycle represents the changes that occur in the follicles of the ovary, whereas the uteri...

Q: Define hepatic portal system

A: The human body consists of many complex metabolic systems. Among them, both vein and artery systems ...

Q: When sensory receptors adapt, does the cerebral cortex receive an increased or decreased number of s...

A: Sensation and perception are two different processes involved in sensory perception. The sensation i...

Q: Define genital tubercle

A: Reproduction is the major activity of human evolution. As both male and female organism’s mating for...

Q: Define gamete

A: Fertilization, also known as generative fertilisation, syngamy, and impregnation, is the fusion of g...

Q: What are the functions of the dermal papillae?

A: The integumentary system is a set of organs including skin, hair, nails, the subcutaneous tissue bel...

Q: Describe the function of major histocompatibilitycomplex (MHC) molecules in immunity.

A: The major histocompatibility complex (MHC) is a large gene cluster on vertebrate DNA that codes for ...

Q: What is the sarcomere?

A: SARCOMERE : aa sarcomere is the complicated unit of striated muscle tissue . It is the repeating uni...

Q: Diagram and explain the mechanism of inspiration and the mechanism of expiration

A: The respiratory system comprises structures and organs involved in respiration or gas exchange in li...

Q: Some smooth muscle has the ability to contract spontaneously—that is,it contracts without any extern...

A: Smooth muscle can be defined as one of the muscle types found in humans which is made up of multiple...

Q: Define Golgi tendon organ

A: The human musculoskeletal system (also known as the human locomotor system) is a system of organs th...

Q: The muscle responsible for action in a single direction is calleda. prime mover.b. antagonist.c. syn...

A: The muscular system in our body plays an important role in producing movements The mobility of the b...

Q: Define hemolysis

A: Hemolysis is referred to as destruction of red blood cells, which leads to the release of hemoglobin...

Q: Define greater vestibular gland

A: A structure consisting of all anatomical organs involved in sexual reproduction is an organism is kn...

Q: Label the lymphatic structures in Figures

A: The lymphatic system is one of the eleven organ systems of the human body. The lymphatic system is a...

Q: Define gastrocolic reflex

A: Digestion is a process of turning or breaking down food into smaller digestible matter as nutrients ...

Q: What are the major causes of aging at the cellular and physiologicallevels?

A: Ageing can be defined as the process in which there is an occurrence of changes in the body over tim...

Q: The hormones secreted by the stomach and small intestine are collectively called _____.

A: The hormones are the chemical biomolecules that are synthesized and released by the body’s endocrine...

Q: Define hemolytic disease of the newborn (HDN)

A: Blood disorders are conditions that affect the ability of blood to function correctly and it ranges ...

Q: Describe the parts of the brain involved in storage of longterm memory, and discuss possible mechani...

A: The hippocampus which is the part of the limbic system is associated with memory. It is primarily in...

Q: Define autophagia

A: Dedicated gene family - Atg genes - Evolutionary conserved cellular process in eukaryotes - Delivers...

Q: What is the similarity between enamel and dentin?

A: Human teeth aim to physically digest food by cutting and grinding it to chew and digest it. Human te...

Q: Define fetus

A: Male sperm and a female egg provide the knowledge to produce offspring during the reproductive proce...

Q: Which vein of the upper limb is typically used to draw a blood sample?

A: Veins carry deoxygenated blood in the body which is rich in carbon dioxide except pulmonary vein. Pu...

Q: Drag the labels to the appropriate location in the figure. Stapes at oval window Round window Vestib...

A: The inner ear is the deepest part of our ear and has 2 important roles to do, that is it changes sou...

Q: Matrix is extracellular. How does the matrix get to its characteristic position?

A: Connective tissue can be defined as the type of tissue that consists of the extracellular matrix. Th...

Q: Select the letter of the choice that best completes the statement. The walls of the digestive tube t...

A:  The breakdown of food into smaller molecules is known as digestion and this function is performed b...

Q: Define hepatic artery

A: The circulatory system involves the circulation of blood as well as the nutrients from and to the he...

Q: Describe the involvement of the skin in vitamin Dproduction and in excretion.

A: Vitamin D is a fat soluble vitamin and in humans, is produced by the skin. Vitamin D is important fo...

Q: How do smooth muscle cells differ from skeletal musclefibers in their electrical properties?

A: Muscles are referred to as the contractile is of tissues of the body that are responsible for causin...

Q: What is the term for localized swelling caused by fluid accumulation?a. lymphb. lupusc. edemad. comp...

A: Body fluids are essential fluids of the body. It contains various proteins, antibodies, and proteins...

Q: What exchanges take place across the placenta?

A: Placenta is a finger like projection formed during the development of the embryo inside the female u...

Q: What are the external iliac arteries called when they pass the inguinalligaments?

A: External iliac arteries when they pass through the inguinal ligament are known as the femoral artery...

Q: Define helper T cell

A: The immune system consists of tissues, cells, and chemicals that work together to combat infection (...

Q: Describe the similarities between the female and malereproductive systems

A: Reproduction is the process of producing offspring that are biologically or genetically similar to t...

Q: Explain how hormone release is regulated.

A: Hormone production and release are primarily controlled by negative feedback. In negative feedback s...

Q: por favor answer these questions. thanks!!

A: The bridge that relays the orders and information between the peripheral nervous system and brain is...

Q: Considering the equation for renal clearance: UV C = F, if the concentration of a substance in the u...

A: The urinary system is composed of a pair of kidneys, a pair of ureters, the urinary bladder, and a u...

Q: Sketch the overlapping pattern of myofilaments to show howthey account for the A bands, I bands, H b...

A:                          

Q: What is a hematoma? Explain the difference between a soft callus and a hard callus.

A: ANSWER 1: Hematoma is defined as the condition when blood gets accumulated inside the skin. Usually,...

Q: In Bougainvillea, sunflower, and hibiscus, what is the position of stamen? what is the insertion of ...

A: The stamen is composed of two parts: the anther and filament. The anther produces male reproductive ...

Q: In flowers, the structures that produce male gametophytes are called______ ; the structures that pro...

A: Flower can be defined as the organ present in the plant which participates in reproduction. The repr...

Q: What are the variations in floral structure in this cross floral diagram? Note that in epigynous flo...

A: A floral diagram means the graphic representation of the flower structure which shows the number of ...

Q: Can you help me the name of the muscle  of the labels in the picture?

A: The most common type of muscle found in the vertebrates whose action can be controlled according to ...

Q: Which of the following events does not take place when a fetus is 17 to 20 weeks old? (a) fetal move...

A: Reproduction is a biological process by which an organism reproduces an offspring who is biologicall...

Q: Can you help me the name of the muscle of the labels in the picture?

A: 67-auricle 68-parotid gland 24-frontalis 28-temporalis  

Q: What happens to arterial blood pressure during exercise?

A: Blood pressure (BP), also known as arterial blood pressure, is the force exerted by pumping blood ag...