Answer: Option D. -> Rib cage
:
D
The humanappendicular skeletonis composed of the bones of the upper limbs, the lower limbs, the pectoral girdle, and the pelvic girdle. The pectoral girdle acts as the point of attachment of the upper limbs to the body. The upper limb consists of the arm, the forearm, and the wrist and hand.
Theaxial skeletonis the part of theskeletonthat consists of the bones of the head and trunk of a vertebrate. In the humanskeleton, it consists of 80 bones and is composed of six parts; the skull bones, the ossicles of the middle ear, the hyoid bone, the rib cage, sternum and the vertebral column.

Answer: Option A. -> Pubis and ischium
:
A
The obturator foramen is the large opening created by the ischium and pubis bones of the pelvis through which nerves and blood vessels pass

Answer: Option C. -> 80
:
C
Total number of bones in the axial skeleton of man are

• 29 bones in the head - (8 cranial and 14 facial bones) and then also 7 associated bones (6 auditory ossicles and the Hyoid Bone)


• 25 bones of the thorax - (the sternum and 24 ribs)


• 26 bones in the vertebral column (24 vertebrae, the sacrum and the coccyx)

Answer: Option C. -> Conducts impulses forward
:
C
T –tubules are a part of sarcoplasmic reticulum of muscle cells. Calcium is stored in the sarcoplasmic reticulum.Thefunction of T-TUBULESis to conduct impulses from the surface of the cell (sarcolemma) down into the cell. Acetylcholoine is present in the axon terminals of tne neurons.

Answer: Option A. -> Pubis and ischium
:
A
The obturator foramen is the large opening created by the ischium and pubis bones of the pelvis through which nerves and blood vessels pass

Answer: Option C. -> 80
:
C
Total number of bones in the axial skeleton of man are

• 29 bones in the head - (8 cranial and 14 facial bones) and then also 7 associated bones (6 auditory ossicles and the Hyoid Bone)


• 25 bones of the thorax - (the sternum and 24 ribs)


• 26 bones in the vertebral column (24 vertebrae, the sacrum and the coccyx)

Answer: Option A. -> Myoglobin
:
A
Red muscles musclefibres are darkredwhich isdue to the presence of redhaemoprotein called myoglobin.
Hemoglobinin its deoxygenated state has a low affinity for oxygen compared to myoglobin(it is present only in muscles)
Globulins, albumin, and fibrinogen are the major blood proteins.
Phycoerythrin(PE) is a red protein-pigment complex from the light-harvesting phycobiliprotein family, present in red algae and cryptophytes

Answer: Option D. -> Arthritis is an old person's disease.
:
D
The most common misconception about arthritis is that it's a disease only of old people. In actuality, arthritis can affect anyone at any age, not just the elderly including children, Young adults and middle aged.

Answer: Option A. -> Pectoral girdle - Acetabulum
:
A
The shoulder girdle or pectoral girdle is the set of bones which connects the upper limb to the axial skeleton on each side. In humans, it consists of the clavicle and scapula.The acetabulumis a concave surface of the pelvis. The head of thefemurmeets with the pelvis at the acetabulum, forming the hip joint.
The pelvic girdle is formed by the fusion of ilium, ischium, and pubis.

Answer: Option D. -> Rhythmicity
:
D
Rhythmicity is a property of cardiac musclesin cardiology, the ability to beat, or the state of beating, rhythmically without external stimuli.
Excitability: this refers to muscle tissue being able to react to nervous stimulation.
Extensibility: this refers to the ability of muscle tissue to lengthen when contracting and provide the effort required to move the lever system (the bones and joints), producing coordinated movement.
Contractility -: this refers to the capacity of a muscle to contract or shorten forcibly when stimulated by nerves and hormones (excitability).