According to Louis Leakey behaviors that are common to modern humans and modern chimpanzees would be present in our common ancestor. Give  3 key behaviors behaviors that are likely to be present in early humans?

Q: A stimulus causes a change in permeability of neural membranes, which begins the process of transmit...

A: An action potential is referred to as a sudden, quick, transient, and propagating change of the rest...

Q: i got this wrong but i want to use it to study please help

A:     The spinal cord provides a means of communication between the brain and the peripheral nerves th...

Q: Where do B lymphocytes gain immunocompetence? lymph nodes red bone marrow thymus

A: An ability of the human body to develop immune response against an invading pathogens or foreign bod...

Q: b. How can meningitis been diagnosed? c. What is encephalitis?

A: Meningitis is the medical condition in which the coverings of the brain and spinal cord or meninges ...

Q: . Consider the structure of the amino acid aspartic acid. Indicate the hybridization about each inte...

A: Hybridization is the combination of atomic orbitals to form hybrid orbitals. Hybrid orbitals have di...

Q: T-tubules are invaginations of the sarcolemma of a muscle cell. True or False True False

A: The skeletal muscle cell (myocyte) contains sarcoplasm surrounded by sarcolemma. It comprises specia...

Q: what is hangman’s fracture

A: Every human being has got a skeleton. A skeleton not only protects the human body but also enables t...

Q: Myoglobin provides muscle fibers with a means of supplying ATP anaerobically. True or False

A: The globin is a globular protein that contains heme group and it plays a vital role in binding and t...

Q: Compare and contrast the signaling events involved with the second messengers cAMP and IP3.

A: Introduction: Different types of electrical signals or chemical compounds work as messengers for tra...

Q: 11. NAME ONE hormone secreted by this gland. 11

A: The thyroid gland is located on either side of trachea and are composed of follicles and stromal tis...

Q: An individual with very low levels of vitamin D presents themselves to you complaining of seemingly ...

A: Calcium is a chemical substance that no biological mechanisms are capable of creating. The only way ...

Q: Which of the following is a cause of metabolic acidosis?a. excessive HCl lossb. increased aldosteron...

A: The decrease in the pH of the blood due to excessive secretion of acids by the cells of the body is ...

Q: During which part of the swallowing reflex is it not possible to talk or even breathe? Why?

A: The pharynx serves as a common passageway for food and air. Reflex mechanisms close off the trachea ...

Q: Both potassium and sodium channels located along the nerve membrane are voltage-gated. This means th...

A: Neurons send the signal electrochemically. The chemical molecules are called ions to have an electri...

Q: What are the functions of the basal nuclei?

A: Introduction: The systematic control of the movements exhibited by the organism having a nervous sys...

Q: What is this image and the parts labelled in it?

A: An adrenal gland is made of two main parts: The adrenal cortex and the adrenal medulla. The adrenal ...

Q: Name the parts of the cardiovascular system.

A: The cardiovascular refers to an organ system in the body that helps in blood circulation. This syste...

Q: 9 Match the numbers in the figure with the corresponding lobes or sulci in the ist below 2 1 6. 3 7 ...

A: The nervous system is composed of the brain, spinal cord, and nerves. The brain is divided into thre...

Q: Generally, what is the result of the negative feedback process? Of positive feedbnack?

A: Positive feedback is where a change in the process will lead to a better result ie in a positive way...

Q: Charles is a diabetic with Alzheimer's disease and often forgets whether he has injected insulin or ...

A: Hyperinsulinemia is the condition where the level of insulin in the blood is very high compared to t...

Q: Name the endocrine gland labeled with B

A:    Endocrine system has ductless glands that secrete chemical messengers called hormones that circul...

Q: conduction system of the heart regulates the electrical impulses

A: The heart is an organ that is composed of muscle tissue where the heart requires energy and oxygen i...

Q: Assuming that randi is suffering a myocardial infatuation, discuss what she needs to receive treatme...

A: Myocardial infarction, heart attack, when blood flow is restricted in the heart due to formation of ...

Q: Identify liver anatomy and blood supply

A: The liver has important role in metabolism and has various body roles, like glycogen accumulation, p...

Q: 6.Describe a synapse and a neuromuscular junction.

A: The nervous system in the human body is responsible for controlling all the body parts through trans...

Q: Those who suffer an asthma attack have difficultybreathing. From the discussion of bulk flow, what d...

A: Bulk flow of air is defined as the movement of gases following the pressure gradient, i.e, from the ...

Q: What is the function of cholesterol in plasma membranes?

A: The plasma membrane is the physical and chemical barrier, responsible for separating the intracellul...

Q: 3) A person has been fasting overnight and when this person wakes up, the person drinks a can of reg...

A: Glucose is a monosaccharide that is used as the major energy source in the body. The dietary carbohy...

Q: 8- Complete the following statements by writing the proper word or phrase on the corresponding blank...

A: The cerebrum is the main and the largest part of the body. It consists of the right and left hemisph...

Q: Explain the basic functional differences between B and T lymphocytes.

A: The immune system's white blood cells responsible for adaptive immune response in an organism are B ...

Q: An individual was suffering from violent headaches and blurred vision for several years. A doctor de...

A: Pituitary gland is a small pea-sized gland that is located at the base of the brain, just below the ...

Q: Contrast the structure of a lymphatic capillary with that ofa continuous blood capillary. Explain wh...

A: The tiny vessels that function to supply the body fluid called lymph from the interstitial space to ...

Q: Smooth muscle cells lack transverse tubules. True or False True False

A: Smooth muscle is basically an involuntary non striated muscle, consists of narrow spindle shaped cel...

Q: Which plasma membrane structures serve in cell recognitionand act as a “personal ID card” for the ce...

A: All mature human cells have three basic constituents, plasma membrane, cytoplasm, and nucleus. The p...

Q: In addition to the muscles of the thigh with “adductor” in their name, what other muscles assist wit...

A: Adduction of muscle is referred to as the phenomenon in which muscles are allowed to move towards th...

Q: Define circumduction

A: Synovial joints are those that gain movement at the point of contact of the articulating bones. They...

Q: Blood flows faster in a venule than in a capillary because venulesa. have one-way valves.b. are more...

A: The circulation of blood is governed by the cardiovascular system, which has two different circuits ...

Q: Did exercise cause the force of pulse to increase or decrease?

A: Typically speaking, during exercise, the heart beats faster and more robust to increase cardiac outp...

Q: 2. Which of the following statements accurately compares systole and diastole? a. During systole, th...

A: The circulatory system comprises of heart and blood vessels. The blood which is devoid of oxygen and...

Q: How does a visceral reflex differ from a somatic reflex?

A: In neurophysiology, the term reflex is used to describe any involuntary, sudden action of a part of ...

Q: Discuss the motor output and reflexes of thebrainstem

A: The brainstem is the posterior part of the brain connects the brain with the spinal cord. It is comp...

Q: Which gland produces hormones via humoral control thyroid parathyroid both thyroid and parathyr...

A:    Endocrine system has ductless glands that secrete chemical messengers called hormones that circul...

Q: The nerve impulses always travel in one direction from dendrites to axon terminals. What prevents an...

A: The neurons are the specialized cells which make up the nervous system. These cells have a special a...

Q: Why are alveolar type II cells important in maintaining theinflation of the lungs?

A: Lung inflation can be described as a process in the lungs during which a force is generated by the d...

Q: What is the main characteristic that distinguishesconnective tissue from other tissues?

A: The structural and functional unit of the body, the cells, aggregate in accordance with their shape ...

Q: A channels opens a postsynaptic membrane that causes a negative ion to enter the cell. What type of ...

A: Graded potentials are the short lived changes occurs according to the charge in the membrane. They a...

Q: How relaxation occur in skeletal muscle?

A: Muscles are divided into three categories, skeletal, smooth, and cardiac. The skeletal, remaining at...

Q: Describe the four levels of protein structure.

A: The monomers, amino acids are linked by peptide bonds to form a polypeptide chain. One or more polyp...

Q: What is a portal system? Describe the hypothalamohypophysial portal system.

A: The hypothalamus is located within the brain, and the pituitary gland is situated the inferior to th...

Q: Which are types of Transmural Pressure?

A: The pressure difference across the intenal and external sides of a hollow structure is known as the ...